Engraving methods

When a person is converting a machine to CNC, sometimes it is necessary to
make new dials if they want one after possibly changing the lead screw pitch.
I can easily understand the straight lines for the .001, .005, and .010
markings, long and short lines for each position, and how they would be done.
But my problem understanding comes into play when you start engraving the
numbers.
How do you make allowances for the curvature of the dial,at different
diameters, the different width of the numbers. Example 1 versus 2, take up
different amounts of space.

What software is used for this, and would someone post a sample G code, for
a 2 inch dial for an example. I will not be running it, but want to study it.

Also please describe setup, angles, etc.
Thanks,
bill


[Non-text portions of this message have been removed]