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		Thanks to 
		all our customers for taking the time to send us their pictures. If you 
		would care to send us a photo of your DRO installation and ultimately 
		benefit others who may be contemplating the same install, please send 
		your photos to scott@dropros.com. 
		Thank you! 
		DRO PROS carries magnetic scale kits that can't be contaminated! Call us 
		for all your digital readout needs! 
		
		  
		
		#1 - Courtesy 
		of T. Scholey with the new MagnaSlim Magnetic Scale  
		Lathe Kit: 
		  
		
		  
		  
		
		     
		  
		
		    
		  
		  
		  
		
		
		#2 - Courtesy 
		of P. Smith with the new MagnaSlim Magnetic Scale  
		Lathe Kit: 
		
		  
		
		
		  
		
		  
		
		
		     
		
		  
		
		  
		
		  
		
		#3 - Courtesy 
		of M. Steinbeck with the new MagnaSlim Magnetic Scales on his Weiss 
		Mill: 
		  
		
		   
		  
		
		      
		  
		  
		  
		
		
		#4 - Courtesy 
		of T. Byrnhe with a 3 Axis EL700 Magnetic Scale  
		Kit: 
		
		  
		
		   
		
		  
		
		
		      
		
		  
		
		  
		
		  
		
		
		#5 - Courtesy 
		of R. Humphreys with a 4 Axis EL700 Magnetic Scale  
		Kit: 
		  
		
		   
		  
		
		     
		
		  
		
		     
		  
		
		   
		  
		  
		  
		
		#6 - Courtesy 
		of C. Bennett with a 3 Axis EL700 Magnetic Scale  
		Kit: 
		  
		
		  
		  
		
		    
		  
		
		   
		  
		  
		  
		
		#7 - Courtesy 
		of "Skypilot" Genseal with a DRO PROS Electronica Magnetic Scale Mill 
		Kit: 
		  
		
		  
		  
		
		    
		  
		  
		
		  
		
		
		#8 - Courtesy 
		of D. Serles with an EL400 2 axis Lathe Kit: 
		
		  
		
		
		   
		
		  
		
		
		       
		  
		
		  
		
		  
		
		#9 - Courtesy 
		of Eric with an EL700 4 axis Magnetic Scale Kit: 
		  
		
		   
		  
		
		    
		  
		
		    
		  
		  
		  
		
		#10 - Courtesy 
		of G. Whitman with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		  
		
		  
		  
		
		    
		  
		
		    
		  
		  
		  
		
		#11 - Courtesy 
		of B. Corneil with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		  
		
		  
		  
		
		    
		  
		
		   
		  
		  
		  
		
		#12 - Courtesy 
		of B. Sly with a DRO PROS Electronica Magnetic Scale Mill Kit: 
  
		
		   
		  
		
		    
		  
		
		    
		  
		  
		  
		
		#13 - Courtesy 
		of B. Janacek with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		  
		
		  
		  
		
		    
		  
		  
		  
		
		#14 - Courtesy 
		of K. Rucker with a DRO PROS Electronica Magnetic Scale Mill Kit: 
	
		  
		
		  
		  
		
		    
		  
		  
		  
		
		#15 - Courtesy 
		of D. Ticehurst with an Electronica Magnetic Scale Mill Kit on the quill: 
		  
		
		   
		  
		
		    
		  
		  
		  
		
		#16 - Courtesy 
		of M. Tracy with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
		  
		
		  
		  
		
		    
		  
		  
		  
		
		#17 - Courtesy 
		of J. Maxwell with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
		  
		
		  
		  
		
		    
		  
		
		    
		  
		  
		  
		
		#18 - Courtesy 
		of J. Morrison with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
	
		  
	
	  
		  
		
		
	   
		
		  
	
	    
		  
		  
		  
		
		#19 - Courtesy 
		of L. Schmidt with an Electronica 4 Axis Magnetic Scale Mill Kit: 
		
		  
		
		   
		  
		
		      
		  
		  
		  
		
		#20 - Courtesy 
		of J. Gilmore with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		
		  
		
		
		   
		
		  
		
		
		     
		  
		  
		  
		
		#21 - Courtesy 
		of A. McCutchen with an Electronica EL400 Magnetic Scale Mill Kit: 
		  
		
		    
		  
		
		    
		  
		  
		  
		
		#22 - Courtesy 
		of Mitch with a Magnetic EL400 on his lathe: 
		  
		
		
		
		   
		  
		
		     
		  
		  
		
		#23 - Courtesy 
		of Anonymous with a Magnetic Scale on the tailstock: 
		  
		
		
		  
		  
		
		    
		  
		  
		  
		
		#24 - Courtesy 
		of R. Molho with a 4 axis DRO PROS Magnetic Scale Quill: 
		
		  
		
		
		  
		
		  
		
		
		    
		  
		  
		  
		
		#25 - Courtesy 
		of W. Lane with a 4 axis DRO PROS Magnetic Scale Quill: 
		
		  
		
		
		  
		
		  
		
		
		      
		  
		  
		  
		
		#26 - Courtesy 
		of T. Scholey with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
		
		  
		
		
		  
		
		  
		
		
		    
		  
		  
		  
		
		#27 - Courtesy 
		of L. Maraio with a Color LCD EL700 Magnetic Scale Mill Kit: 
		  
		
		   
		  
		
		     
		  
		  
		  
		
		#28 - Courtesy 
		of P. Smith with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		  
		
		  
		  
		
		   
		  
		  
		  
		
		#29 - Courtesy 
		of R. Peters with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
		
		  
		
		
		  
		
		  
		
		
		    
		  
		
		    
		  
		  
		  
		
		#30 - Courtesy 
		of M. Hall with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
		
		  
		
		
		  
		
		  
		
		
		    
		  
		  
		  
		
		#31 - Courtesy 
		of J. Vietti with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		
		  
		
		
		  
		
		  
		
		
		    
		  
		  
		  
		
		#32 - Courtesy 
		of B. Summers with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
		  
		
		
		
		
		  
		  
		
		    
		  
		
		   
		  
		  
		  
		
		#33 - Courtesy 
		of D. Howe with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
		  
		
		  
		  
		
		    
		  
		
		    
		  
		
		   
		  
		  
		  
		
		#34 - Courtesy 
		of B. Shields with a DRO PROS Electronica Magnetic Scale Lathe Kit: 
		  
		
		
		  
		
		  
		
		
		    
		
		  
		
		
		    
		  
		  
		  
		
		#35 - Courtesy 
		of K. Roon with a DRO PROS Electronica Magnetic Scale Mill Kit: 
  
		
		
		
		
		  
		  
		
		    
		  
		  
		  
		
		#36 - Courtesy 
		of W. Mitzen with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		
		  
		
		
		  
		
		  
		
		
		    
		  
		  
		  
		
		#37 - Courtesy 
		of P. Howell with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		
		  
		
		
		  
		
		  
		
		
		    
		  
		  
		  
		
		#38 - Courtesy 
		of R. Hardwick with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		
		  
		
		
		  
		
		  
		
		
		    
		  
		  
		  
		
		#39 - Courtesy 
		of M. Roberts with an Electronica Magnetic Scale 300 "Universal" Kit: 
	
		  
		
		  
		  
		
		    
		  
		
		    
		  
		
		    
		  
		  
		  
		
		#40 - Courtesy 
		of S. Gooselaw with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		
		  
		
		
		  
		
		  
		
		
		    
		
		  
		
		
		    
		  
		  
		  
		
		#41 - Courtesy 
		of R. Munoz with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		  
		
		
		  
		  
		
		    
		  
		  
		  
		
		#42 - Courtesy 
		of T. Doran with a DRO PROS Electronica Magnetic Scale Mill Kit: 
		  
		  
		
		  
		    
		  
		
		    
		  
		  
		  
		
		#43 - Courtesy 
		of R. Lyn with a DRO PROS Electronica Magnetic Scale Kit: 
		        
		(custom mounted to an optical comparator) 
		  
		
		
		  
		  
		
		   
		  
		  
		  
		
		#44 - Courtesy 
		of J. Perkins with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
		
		
		
		   
		  
		
		     
		  
		  
		  
		
		#45 - Courtesy 
		of Wil with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
		
		  
		  
	
	    
	  
		
		    
		  
		  
		  
		
		#46 - Courtesy 
		of M. Niadna with a DRO PROS Glass Scale Lathe Kit: 
		  
		
		  
		  
		
		    
		  
		
		    
		  
		  
		  
		
		#47 - Courtesy 
		of Unknown with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
		
	  
		  
	
	    
		  
	
	    
		  
		  
		  
		
		#48 - Courtesy 
		of H. Kratz with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
	
	  
		  
	
	    
		  
	
	  %20(2).jpg)  
		  
		  
		  
	#49 - Courtesy 
	of G. Young with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
	
	  
		  
	
	   
		  
		  
		  
	#50 - Courtesy 
	of R. Herold with a DRO PROS 2M two axis glass scale Mill Kit: 
		  
	
	  
		  
	
	    
		  
		  
		  
	#51 - Courtesy 
	of R. Hartshorne with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
	
	  
		  
	
	    
		  
    
		  
		  
		  
	#52 - Courtesy 
	of J. Guest with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
  
		  
    
		  
   
		  
		  
		  
	#53 - Courtesy 
	of M. Crego with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
  
		  
    
  
  
		  
		  
		  
		
		#54 - Courtesy 
		of Dave with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
	
		
		  
		  
		
		    
		  
		
		   
		  
		  
		  
		
		#55 - Courtesy 
		of Bjorn H. with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
		
		  
		  
		
		    
		  
		  
		  
	#56 - Courtesy 
	of K. Byrd with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
	
	  
		  
	
	    
		  
	
	    
		  
		  
		  
	#57 - Courtesy 
	of John B. with a DRO PROS 2M two axis glass scale Mill Kit: 
		  
	
	  
		  
	
	   
		  
	Here is a link 
	to his comments: 
	John B's 
	Comments 
		  
		  
		  
	#58 - Courtesy 
	of J. Gillies with a DRO PROS 3M three axis glass scale Mill Kit 
		  
	
	  
		  
	
	    
		  
		
		   
		  
		  
		  
	
	#59 - Courtesy of 
	J. Iseli with a DRO PROS 2M two axis glass scale Mill Kit: 
		  
	
	  
		  
	
	     
		  
	
	    
		  
		  
		  
	
	#60 - Courtesy of 
	B. Martin with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
	
	  
		  
		  
		  
		
		#61 - Courtesy 
		of P. Thompson with a DRO PROS 3M three axis glass scale Mill Kit: 
		  
		
		  
		  
		
		    
		  
		
		   
		  
		  
		  
		
		#62 - Courtesy 
		of T. Ancell with an Easson ES10-3M5 three axis glass scale Mill Kit: 
		  
	
	  
		  
	
	    
		  
	
	     
		  
		  
		  
	
	#63 - Courtesy of 
	R. Fenichel detailing how to mount a Z glass scale on a Sieg SX3: 
		  
	
	   
		  
Here is the link to 
his detailed instructions:
SX3 Z 
Scale Install 
		  
		  
		  
		
		#64 - Courtesy 
		of J. Hicks with an Easson ES10-3M5 three axis glass scale Mill Kit: 
		  
	
	  
		  
	
	     
		  
		  
		  
		
		#65 - Courtesy 
		of H. Noble with an Easson ES10-3M5 three axis glass scale Mill Kit: 
	
		  
		
  
  
    
		  
		  
		  
		#66 - 
		Courtesy of W. Pfeiffer with an Easson ES10-3M5 three axis 
	glass scale 
		Mill Kit:  
		  
		
		  
		  
		
     
		  
		  
		  
#67 - Courtesy of 
(unknown) with an Easson ES10-3M5 three axis glass scale Mill Kit: 
		  
  
		  
    
		  
		  
		  
#68 - Courtesy of R. 
Partridge with an Easson ES10-2M5 two axis glass scale Mill Kit: 
		  
  
		  
   
		  
		  
		  
#69 - Courtesy of B. Ohlemann with an Easson ES10-2M5 two axis glass scale Mill Kit: 
		  
  
		  
    
		  
		  
		  
#70 - Courtesy of D. 
Collins with an Easson ES10-2M5 two axis glass scale Mill Kit: 
		  
  
		  
		
		    
		  
		  
		  
		
		#71 - Courtesy 
		of V. Esplin with a DRO PROS 2L two axis glass scale Lathe Kit: 
		  
  
		  
		
    
		  
		
    
		  
		  
		  
		
		#72 - Courtesy 
		of M. McDevitt with a DRO PROS 2L two axis glass scale Lathe Kit: 
		  
		
		  
		  
		
		    
		  
		  
		  
		
		#73 - Courtesy of 
		D. Roth with a DRO PROS 2L two axis glass scale Lathe Kit: 
		  
		
		
		  
		  
		
		    
		  
		  
		  
		
		#74 - Courtesy of 
		A. Wilson with a DRO PROS 2L two axis glass scale Lathe Kit: 
		  
  
		  
    
		  
		  
		  
		
		#75 - Courtesy 
		of G. Inglehart with an Easson ES10-3L5 three axis glass scale Lathe 
		Kit: 
		  
		
  
		  
		
    
		  
		  
		  
		
		#76 - Courtesy 
		of R. Suttle with an Easson ES10-2L5 two axis glass scale Lathe Kit: 
		  
	
		
		  
	
		  
	
		
		    
		  
		  
		  
		
		#77 - Courtesy 
		of J. Dolde with an Easson ES10-2L5 two axis glass scale Lathe Kit: 
		  
  
		  
    
		  
		  
		  
#78 - Courtesy of K. 
Coker with an Easson ES10-2L5 two axis glass scale Lathe Kit: 
		  
  
		  
    
		  
		  
		  
		
		#79 - Courtesy of R. Pleas 
		with an Easson ES10-2L5 two axis glass scale Lathe Kit: 
		  
  
		  
     
		  
		  
		  
#80 - Courtesy of J. 
Holmgren with a Newall M20 two axis magnetic scale Mill Kit: 
		  
  
		  
    
		  
		  
		  
		
		#81 - Courtesy 
		of S. Chase with a Newall M20 two axis magnetic scale Lathe Kit: 
	
		  
	
		
		  
	
		  
	
		
		    
	
		  
	
		  
	
		  
	
		  
	
		  
	
		  
	
		  
	
		  
		  
		  
		  
		
		#82 - Courtesy 
		of R. Wells with a Newall M20 two axis magnetic scale Mill Kit: 
	
		  
	
		
		  
	
		  
	
		
		    
		  
		  
		  
		#83 - 
		Courtesy of R. Snyder with a Newall M20 two axis magnetic scale Lathe 
		Kit: 
		  
	
	  
		  
	
	   
		  
		  
		  
#84 - Courtesy of D. 
Hall with a Fagor Innova two axis glass scale Lathe Kit: 
		  
  
		  
  
		  
		  
		  
		
		Hints and 
		Techniques from our Customers 
	
	
		
		
		DRO KIT 
		Installation - Notes, Warnings and Cautions 
	
		The Readhead
- What the readhead looks like 
		The Threaded Holes 
		
- Size and tap sizes for mounting the scale 
	
Nuts & Bolts 
- Specifications of fasteners included with our kits 
	
		
		Prepping the Scale - 
		How to protect the scale so 
		the readhead doesn't run into the end 
	
		Dragging the Scale 
- How to ensure the readhead doesn't drag the inside of the scale 
		Do 
I have to center the scale on the table? - Tips on where to mount the 
scales 
	
		
		Bracket Alignment - 
		How to line the mill kit 
		brackets up with the holes  
	
		
		Mill Installation 
		- 
		Excerpts from the Mill 
		Installation Booklet 
	
			
			Click HERE to read how to 
initialize 1 micron scales on the DRO PROS 2L Lathe Kit 
	
			
			
			Click HERE to read how to 
			initialize 1 micron scales on the DRO PROS 2M Milling Machine Kit 
	
			
			
			Click HERE to read how to 
			initialize 1 micron scales on the DRO PROS 3M Milling Machine Kit 
			  
		
		  
		The "Blue 
		Strip"- Between the scale and the reader head there is a blue strip 
		which helps to maintain the correct distance between the reader head and 
		the scale for installation purposes. This should be removed after 
		installation. 
		
		  
		
		
		Hints and 
		Techniques from our Customers 
		  
Sometimes it's best to let 
your customers do the talking 
(Please click on Mikes' 
letter to the right for the full install story and photos).  
Look at what Mike Grey of 
AWMS Inc. had to say about his DRO PROS Installation: 
  
  
18 Jul 2010 
DRO PROS, 
You were most 
helpful when I was looking to purchase a DRO for my lathe  -  so 
thought I would drop you a line and let you know how things turned out as well 
as offer some other information. 
I suggest you 
consider adding a spot on your web site that shows customer installs of your 
products on various machines.  The way others solve the problems of 
installation would be helpful for ALL users.  Particularly, if the 
installation is on a similar machine.  Should you choose to do so, here is 
my contribution.  
 
Sincerely, 
Mike Gray 
 
		  
		  
	
	  
	
		
		DRO KIT 
		Installation - Notes, Warnings and Cautions 
	
		  
	
		Between the 
		scale and the reader head there is a blue strip which helps to maintain 
		the correct distance between the reader head and the scale for 
		installation purposes. This should be removed after installation. 
	
		  
		
Note: To give the 
best 
protection, the scale should be mounted with the yellow rubber seals (lips) 
facing down. Note that this is not always possible. The scale performs equally 
well mounted in any direction. It's just that optimally, the best protection is 
afforded with the opening facing down or away from the cutting tool.  
		
  
	
The travel length of the 
glass grating scale must be longer than the maximum travel of the machine, there 
should be at least 10mm clearance (approximately 1/2") between the ends of the 
glass scale and the maximum travel of the machine as shown in the following 
figure: 
		
  
		
		  
		
		It is very 
		important that the scale body be aligned parallel to the travel of the 
		machine slide. For scale travel less than 950mm, the maximum parallel 
		error between the scale and the machine slide must be less than 0.15mm. 
		For scales longer than 950mm, the maximum alignment parallelism error 
		must be less that 0.1mm: 
  
		The 
		clearance between the reader head and scale body must be kept between 
		0.8mm - 1.5mm. 
		
		If a dial 
		indicator is used to align the scale, it is important to ensure that the 
		angle between the dial indicator lever tip and the surface measured is 
		less than 3 degrees to avoid a cosine measurement error. lf a vertical 
		dial indicator is used as per the following figures shown, it is 
		important to ensure that the dial indicator is perpendicular to the 
		measured surface to avoid any error: 
	
		  
		
		  
		
  
		
		  
		
		The opening of the 
		scale must not be installed as to be directly exposed to swarf, oil, 
		water, dust or other foreign products. The provided protectant covers 
		should be installed. 
		
  
		
		  
		
  
	
  
	
The scales should be 
installed on a level, machined surface. 
		
		  
	
		In cases where 
		machined flat surfaces are not available, an installation block or strip 
		should be used to provide a flat datum for the installation: 
		
		  
		
		There must be a 
		clearance of at least 3.0mm between the scale and the scale cover: 
		
		  
		
		  
	
		All cables should 
		be fixed, but still allow for the maximum amount of machine travel. 
		 
		If 
		fitting the Z axis, the scale should be installed on the side of the 
		column, ensuring that the open side of the scale is away from direct 
		swarf and coolant. The bracket is mounted on the knee, and should wrap 
		around the scale to allow for the cover to protect the scale. 
		
		  
	
		DRO KIT 
		Installation - Parts and Pieces 
	
		  
	
The first thing we 
recommend is to get familiar with the scales. First, let's go over the parts of 
a scale. The main housing is referred to as the scale body. The reader or 
readhead is actually inside of the scale, and is self-guided by five ball 
bearings along tracks inside the housing. The outside piece is the "trolley" and 
simply pushes and pulls the readhead along the length of the scale body. The 
"joint" between the trolley and the readhead is a metal arm which terminates at 
the readhead in a kind of ball-and-socket joint. The point of this all is that 
the readhead is self-aligning, meaning that the outside trolley does not 
need to be in perfect parallel alignment with the scale body.  
	
  
	
The Readhead 
	
  
	
  
	
  
	
When looking at a scale 
for the first time, the first thing that catches most peoples eyes is the 'blue 
plastic piece' between the trolley and the scale body. It is intended to keep 
the readhead from moving during shipping, but also serves as an excellent tool 
for determining the offset or distance the trolley should be mounted away from 
the scale body. At the end of the day, it will be in the trash, but for now, 
don't discard it. 
	
  
	
  
	
  
	
The first task will be to 
mark the scales in a way that would visually warn us if the readhead is nearing 
the extreme end of the scale. The arm between the trolley and the readhead is 
delicate, and if the scale is forcefully run into the end of the scale, it will 
break.
 
	
  
	
First, remove the two 
screws holding the blue plastic piece to the scale body: 
	
  
	
  
	
  
	
Now, run the trolley back 
and forth along the scale with the 'blue plastic piece' still attached to the 
trolley. Notice the movement should be smooth and unrestricted. Move the trolley 
to the extreme end of the scale until it 'bottoms out' or hits the end. Don't 
worry, as long as the readhead is not forcefully struck against the end of the 
scale, it will not be damaged. Make a mark from the trolley to the scale body. 
Exactly where is not important, but most folks choose to mark from the center of 
the trolley as we did. 
	
  
	
	The Threaded Holes 
	When 
	installing scales, the most important thing to remember is that there is not 
	?one right way?. When faced with the task of mounting scales, it is very 
	common for different machinists to come up with several different mounting 
	plans, depending upon their experience, time allowed for installation, and 
	individual creativity. Remember, installation is more about creativity than 
	it is an exact science. Which direction you mount the scales, or which holes 
	you use, depends entirely on what you believe best fits your particular 
	circumstances. The scale endcaps have two holes, neither of which are 
	threaded. The larger, oblong holes allow a 6mm bolt to pass through it, 
	while the smaller round hole is clearanced for a 5mm bolt. The trolley has 
	two pass-through side holes which are tapped with an M5 x .8 thread. The 4 
	smaller holes are blind holes, and are tapped with an M4 x .7 thread. 
	  
	
			Click on 
			the following image to view the Scale Hole Sizes and Threaded 
			Dimensions:  
	
			
			  
	  
	
	Nuts & Bolts 
	
	Depending on your particular kit (i.e. lathe vs. mill, 2 vs. 3 axis etc), 
	your DRO kit will contain a mixture of metric hardware. These are the most 
	common size components in our kits: 
	Socket 
	head cap screw M6 - 1.0 x 30 
	Socket 
	head cap screw M6 - 1.0 x 25 
	Socket 
	head cap screw M5 - .8 x 30 
	Socket 
	head cap screw M5 - .8 x 10 
	Lock 
	washer M6 
	Lock 
	washer M5 
	Flat 
	washer M6 
	Flat 
	washer M5 
	Hex 
	nut M6 - 1.0 
	For 
	tapping your machine, we recommend having a couple of M6 & M5 plug taps on 
	hand: 
	ENCO 
	(1-800-873-3626) has M5x0.8 plug taps for $3.29 each as part number 311-4141 
	ENCO 
	(1-800-873-3626) has M6x1.0 plug taps for $3.76 each as part number 311-4181 
	
  
	
  
	
Prepping the Scale 
	
  
	
  
	
  
	
  
	
  
	
Next, move the trolley to 
other extreme end of the scale. Note the marks now 'split'. 
	
  
	
  
	
  
	
  
	
  
	
Once the trolley is 
bottomed out against the opposite end, make another mark on the scale body 
opposite the mark on the trolley. 
	
  
	
  
	
  
	
  
	
  
	
It should now look like 
this: 
	
  
	
  
	
  
	
  
	
  
	
The point of this exercise 
is that you now have a visual backup of when the trolley would physically hit 
the end of the scale. After properly mounting your scales, the green mark should 
always stay between the red marks at all times as in the following illustration: 
	
  
	
  
	
  
	
  
	
  
	
It is best to mount the 
scale body first. After choosing a flat surface, drill and tap the appropriate 
size holes. Bolt both ends of the scale into place, leaving one end just loose 
enough that it can be 'tapped' into parallel. Run a dial indicator along the top 
surface of the scale, making sure the scale does not rise or fall as the machine 
moves. THIS IS IMPORTANT. Make sure the scale is true BEFORE you mount the 
readhead/trolley assembly. 
	
  
	
Next, mount the trolley. 
It is important to obtain just the right distance or spacing between the 
underside of the scale and the trolley. This is where the 'blue plastic piece' 
comes in handy. If you mount the trolley such that the blue plastic piece is 
snug under the trolley, the spacing will be perfect.  
	
  
	
Note the following picture 
where the 'blue plastic piece' is snugly between the trolley and the body of the 
scale: 
	
  
	
  
	
  
	
  
	
  
	
Inside the scale, this is 
what the readhead looks like when the scale is properly mounted:  
	
  
	
   
	
  
	
Note the underside of the 
readhead is not touching or 'bottoming out' on the inside of the scale body. 
	
  
	
  
	
  
	
The following pictures 
illustrate an IMPROPERLY mounted scale where the 'blue plastic piece' is left 
loose between the trolley and the body of the scale: 
	
  
	
  
	
Inside the scale, the 
underside of the readhead is physically dragging along the length of the scale 
body. Physical failure of the scale will occur almost immediately as the 
readhead will be physically deformed as it drags the underside of the scale: 
	
  
	
Dragging the Scale 
	
  
	
   
	
  
	
Now while we say the blue 
plastic piece needs to be snug, don't make it too tight. The clearances are 
great enough here that you really do not need to 'mic it out'. Mount the trolley 
with the 'blue plastic piece' snug and all will be fine. If you look at the 
above left photo you can clearly see the blue plastic piece is not even close to 
snug, it's simply laying there and would easily slide out if the scale were 
tilted to the side. The point here is that there is plenty of room built into 
the scale for movement and to not get too wrapped up with this. The only real 
catch here is to make sure the scale body is parallel to the machines movement, 
and make sure to mount the trolley so that it doesn't run into the end of the 
scale. 
	
  
Note also that most 
trolleys are a bit wider than the scale on one side, meaning that if you were to 
mount the scale against a perfectly flat surface, the trolley would be pushed 
out of alignment. Note in the following picture how the trolley is wider on the 
left side of the scale than it is the right. If the scale were forcefully 
mounted against a flat surface on the left, the trolley would be forced out of 
alignment or pushed well to the right. Forcefully pushing the trolley out of 
position will decrease its' life expectancy greatly! 
	
  
	
  
  
 Do 
I have to center the scale on the table? 
  
The short answer is no, 
you do not. But let's take a look at some examples to illustrate the point. The 
first series of pictures illustrates a 'traditional' installation on a milling 
machines' X axis where the scale has been mounted relative to the 
center of the table. The scale (light blue) has been attached to the table 
(white). The trolley (dark blue) has been fastened to the base of the machine 
(grey). Remember, we're presenting a typical installation first, followed by an 
example where the scale has been offset. 
		
  
		
  
		
  
		
  
		
  
		
  
		
  
		
  
		
  
	
		
			| 
			  | 
			
			In this 
			example, the scale body has been mounted on the center of the table. 
			Traditionally, this is how most scales are mounted. 
			Note how the trolley (dark blue) is 'centered' on the scale with the 
			table in the middle, or neutral, position. | 
			
			  | 
		 
		
			| 
			  | 
			
			In this 
			diagram, the table has been moved to the extreme left. Note the 
			trolley is nearing the right end of the scale.   
			 | 
		 
		
			| 
			  | 
			
			Now the table 
			has been moved to the extreme right most position. Note how the 
			trolley is nearing, but not over, the left end of the scale. | 
		 
		
			| 
			  | 
			
			  | 
			
			  | 
		 
		
			| 
			While the last 
			example is most likely what most scale installations 
			will end up looking like, let's take a look at a rather extreme 
			case. Remember, while this might be rather academic, the point is to 
			illustrate how you do not need to exactly 'center your 
			scales' when mounting them. They will work just fine offset to one 
			side or the other.  | 
		 
		
			| 
			  | 
			
			 
			In this 
			example, the scale body has been mounted well offset to the left of 
			the table. Note how the trolley is 'centered' relative to the 
			scale with the table in the middle, or neutral, position.  | 
			
			  | 
		 
		
			| 
			  | 
			
			 
			In this 
			diagram, the table has been moved to the extreme left. Note the 
			trolley is nearing the right end of the scale.   
			  | 
		 
		
			| 
			  | 
			
			 
			Now the table 
			has been moved to the extreme right most position. Again, note how 
			the trolley is nearing, but not over, the left end of the scale.  | 
		 
		
			| 
			 
			Now we realize 
			no-one is going to mount a scale quite to the extremes of our 
			previous example. But what we're trying to illustrate is this: 
			First, you do not need to take elaborate steps trying to ensure a 
			scale is perfectly 'centered', because it really doesn't matter. 
			What really does matter is this - wherever you do end up mounting 
			your scale (centered or not), make sure the trolley is 
			centered to the scales travel, and doesn't run off the end. 
			As easy as that!  | 
		 
		 
	  
	  
	  
MILL INSTALLATION 
	  
	
For some reason it is 
extremely common to try and align the mill brackets with the two large hexagonal 
openings on the side of the trolley. The brackets are designed, however, to 
align with the four tapped holes on the underside of the trolley, not the 
two hexagonal shaped holes on the side. Of course, if it makes better sense to 
secure the trolley via the side holes, then go ahead and do it. Modifications 
are encouraged! Take a look at the following pictures: 
	
   
	
  
	
  
	
While your particular mill 
may look altogether different, the basic concepts remain the same. The first 
step is to determine which scale to mount first, and where to mount it. Today, 
we've decided to mount the Y scale first as the X scale will pass over the top 
of the Y scale. Looking at the right side of our machine, we see that the gib 
adjusting screws and table lock mechanism would present a challenge to mounting 
a scale on the right side: 
	
  
	
  
	
  
	
  
	
In contrast, the left side 
of the mill is relatively unobstructed, making it ideal for mounting the scale: 
	
  
	
  
	
  
	
  
	
But while the area is 
relatively unobstructed, the side is not machined square: 
	
  
	
  
	
  
	
  
	
To compensate for the 
sloped surface, we'll install a backer bar. On either end of the bar, top and 
bottom, are grub screws. These screw in or out, as needed, to level the bar: 
	
  
	
  
	
  
	
  
	
Mark and drill the 
mounting holes for the backer bar: 
	
  
	
  
	
  
	
  
	
Attach the backer bar 
using the supplied bolts: 
	
  
	
  
	
  
	
  
	
Insert the grub screws on 
the backer bar:   
	
  
	
  
	
  
	
  
	
With a dial indicator, 
ensure the backer bar is square and perpendicular to the machine slides: 
	
  
	
  
	
  
	
Adjust the grub screws as 
needed until the backer bar is square and perpendicular to the machine slides. 
	
  
	
  
	
The backer bar is now 
installed; level and parallel with the movement of the table: 
	
  
	
  
	
  
	
  
	
Next, fasten the scale to 
the backer bar: 
	
  
	
  
	
  
	
  
	
The scale is now 
installed!  
	
  
	
  
	
  
	
  
	
Next, we'll ensure our 
scale is parallel with our work surface. First, make sure the mill table is 
brought all the way to the rear. Install a dial indicator so that the indicator 
tip rests against the top of the scale: 
	
  
	
  
	
  
	
  
	
Now move the table to the 
front of the machine:   
	
  
	
  
	
  
	
If there is any movement 
of the dial indicator, loosen and adjust the scale end bolt as needed. Repeat 
until the scale is perfectly aligned.  
	
  
	
  
	
Next, we need to mark the 
scales in a way that would visually warn us if the readhead is nearing the 
extreme end of the scale. If you have not done this already, here's how to do 
it: 
	
  
	
  
	
  
	
Make a mark from the 
trolley to the scale body. Exactly where is not important, but most folks choose 
to mark from the center of the trolley as we did. 
	
  
	
  
	
  
	
  
	
Next, move the trolley to 
the end of the scale: 
	
  
	
  
	
  
	
  
	
Mark the end of the scale 
above the mark on the trolley: 
	
  
	
  
	
  
	
  
	
Next, move the trolley to 
other extreme end of the scale. Note the marks now 'split': 
	
  
	
  
	
  
	
  
	
With the trolley touching 
the opposite end of the scale, make another mark on the scale body opposite the 
mark on the trolley. 
	
  
	
  
	
  
	
  
	
The point of this exercise 
is that you now have a visual backup of when the trolley would physically hit 
the end of the scale. After properly mounting your scales, the green mark should 
always stay between the red marks at all times: 
	
  
	
  
	
  
	
  
	
Now place the trolley 
bracket against the saddle where you intend to mount it:  
	
  
	
  
	
  
	
  
	
Drill the mounting holes 
for the trolley bracket: 
	
  
	
  
	
  
	
  
	
Now fasten the bracket 
against the saddle: 
	
  
	
  
	
  
	
  
	
The first trolley bracket 
is now installed! 
	
  
	
  
	
  
	
  
	
Next, place the second 
trolley bracket in place: 
	
  
	
  
	
  
	
  
	
Loosely fasten the 
two bracket bolts: 
	
  
	
  
	
  
	
  
	
Insert the trolley bolts 
through the bracket, into the trolley carriage:  
	
  
	
  
	
  
	
  
	
Tighten the trolley bolts.
Make sure the trolley is not twisted as the bolts are tightened. 
Adjust the bracket as needed: 
	
  
	
  
	
  
	
  
	
Now tighten the bracket 
bolts. Again, 
make sure the trolley is not twisted as the bolts are tightened. 
Adjust the bracket as needed: 
	
  
	
  
	
  
	
All that remains now is to 
verify the scale runs true with the proper spacing: 
	
  
	
Run the table to the back 
of the machine: 
	
  
	
  
	
  
	
  
	
As you move the table to 
the rear, make sure to check the spacing of the blue plastic piece. It should be 
snug, but not overly tight, not overly loose. Optimally, it should look like 
this: 
	
  
	
  
	
  
	
At no point should the 
blue plastic piece bind or become loose. A misaligned scale will look like this: 
	
  
	
  
	
Note the gap between the 
blue plastic piece and the scale body. It is imperative to keep the blue plastic 
piece snug along the full travel of the scale. Please refer to the Getting 
Familiar with the Scales - Parts and Pieces section for more information 
regarding this issue. 
	
  
	
If the blue plastic piece 
indicates the scale is out of alignment, loosen the scale end bolt and adjust 
the scale as needed: 
	
  
	
  
	
  
	
  
	
Next, run the trolley to 
the other end of the scale. Again, check the blue plastic piece alignment both 
during and after the trolley is moved. Loosen and adjust the scale end height as 
needed: 
	
  
	
  
	
  
	
  
	
Congratulations, the scale 
is installed - now don't forget to remove the blue plastic piece! 
	
  
	
  
	
  
	
	  
		
		Scale "Read 
Direction" 
		
  
	
It makes no difference 
which way the scale initially reads. Scale 'read direction' can be easily 
changed in the parameters menu after installation. Mount the scale in the 
position / direction which makes the most sense. In most cases, mount the scale 
with the cable exiting to the rear of the machine, away from the cutter. Please 
keep in mind every installation is unique, so there is no one "correct way" to 
mount scales. Referencing the Customer installation photos provided above may 
help immensely by seeing how our other Customers chose to mount their scales. 
	
  
	
For general reference, we 
provide the following diagram. Remember, scale read direction is, in the end, a 
matter of personal choice:  
	
  
	
  
	
  
		
  
	
	  
	
	  
	
	
	LATHE INSTALLATION 
		To 
		install a readout on a lathe the following tips can be used. To mount 
		the cross slide scale, select a flat surface that is suitable and clear 
		of the traveling parts of the lathe. The scale should be mounted 
		insuring that that it is parallel and square to the slide. 
		
		  
		When 
		mounting the reader head, ensure it travels inline and square to the 
		scale to avoid any damage to the scale. 
		
		  
		
		Testing for parallel can be done by either a dial indicator or a 
		precision level. 
		
		  
		The 
		longitudinal scale should be mounted on the back of the Lathe (Fig 1) 
		with the open side of the scale facing down and must be parallel to the 
		bed. The reader head is mounted to the saddle (Fig. 2 & 3) via the 
		brackets provided. Some modification may be required for some lathes. 
		Covers should be mounted over the slides as per Fig.4. 
		
		    
		   
		
		   
		  
  
	
Note: Between the scale 
and the reader head there is a blue strip which helps to maintain the correct 
distance between the reader head and the scale for installation purposes. This 
should be removed after installation. 
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