Drawing a Vernier Scale

[timstring67]

I am trying to draw a vernier scale for a table saw blade height guage.  I am trying to draw one at 1/128" resolution and one at 0.01" resolution.  I cannot get the spacing correct.  I am 2/128" off.  Needs to be dead on perfect.  .DWG file is attached.

[vinodkl]

Hello @timstring67 

There are few things which need to be corrected in the drawing. You have set the visual style in the drawing to conceptual, which needs to be set to "2dwireframe" when working on 2d drawings(type in the command "VS" and press "2" and enter to set it to "2dwireframe"). Also you have turned on the snap mode which snaps to particular points set (you can turn it off my pressing F9 key). 

You can make the measurement on the left to match 1" by using command "SCALE" with reference option.

See attached drawing.

[timstring67]

Yours is wrong, too. There was nothing wrong with my inch ruler. It burns correctly on a laser engraver. My problem is the Vernier.  It never returns the correct measurement

I'm sorry.  You do not understand what I am trying to accomplish.  My drawing is the face of a 3d print.  I have not yet fleshed out the bodies.  The main scale is fine.  No problems with it.  The Verniers are the problem.  Snaps and views have nothing to do with the problem I am having.  

[timstring67]

I'm sorry.  You do not understand what I am trying to accomplish.  My drawing is the face of a 3d print.  I have not yet fleshed out the bodies.  The main scale is fine.  No problems with it.  The Verniers are the problem.  Snaps and views have nothing to do with the problem I am having.  

[vinodkl]

Oh okay. Perhaps I didn't understand you question correctly. Someone else in the forum might be able to help you out. 

[Kent1Cooper]

How are you doing it, that is giving incorrect results?  If I scale the left one up by a factor of 128, each line should be 2 units apart, but DIST is reporting 1-127/128.  That's apparently because the Line along the right edge of that, that was apparently your path for an Array along a path, is 255 units long, rather than the 256 it should be.

[Washingtonn]

Start with the correct spacing in decimal units with high precision.

Use the ARRAY command to generate the first grouping.

Explode the grouping and lengthen the top line.

Use the ARRAY command to generate the other groups.

Add the text to the bottom grouping.

Copy and change the text as needed to all groups.

Repeat for other scale.

 

[timstring67 · Accepted solution]

I solved it myself:  Since the minor divisions of my main scale are in 16ths, my Vernier only needs 8 divisions—dividing 1/16" by 8 = 1/128".  Then, the eight divisions need to be spaced such that the total distance from 0 to 8 is 15/16".  

In this DWG file, see the construction line in the "Practice" layer, sitting at 1-101/128".  Zeroing the 1/128" Vernier on the construction line yields 5/128". The closest measure on the main scale is 1-3/4".  So, the total measurement = 1-3/4" + 5/128" = 1-96/128"+5/128" = 1-101/128".

The red XLine on Practice sits at Y=2-27/128".  The reading on the main scale is 2-3/16".  The Vernier registers 3.  Therefore, the measure is 2-24/128" + 3/128" = 2-27/128",