DIY manual setting circle dials

[Doc]

I have decided to add manual setting circles to my DocMount and RocketMount. This thread is about the DIY dials I'm adding to the DocMount which is a DM6 clone.

I've added a few photos as they describe the process better then words.

 

 

 

 

This dial is then machined to fit around the UHWPE bearings.

 

 

Once fitted it looks like this.

 

 

A = The pointer which will be scribed this does not move and is fixed.

B = This dial moves 360° and will be scribed 0° to 360°

C = This is a locking screw once tightened it will lock B to the plate connected to the dovetail

 

Finished article

 

 

Now the maths:

 

Setting circle dial is 132mm in diameter.

 

So Pi (3.141) x D 

 

3.141 x 132 = 414.612

 

414.612 divided by 360° = 1.151

 

So am I correct in saying there is a gap of 1.151 between each division.

 

Is this a division in degrees or millimetres?

 

Also does anyone know a UK company that can laser print, or laser engrave degree circles so it looks similar to this

 

 

TIA

Edited June 18, 2021 by Doc