How I applied the Text and hash marks to the Protractor Scale.
I had Simple Extrudes of the numbers that I brought over to a layout guide of the Scale and rotated each into place.
Once all the numbers were in place, they were 3D Added into one unit.
I did a similar thing with the hash marks.
A copy of the Scale and Numbers was moved a set distance to the side via the Inspector Bar. (03 pix)
One copy would be used in a 3D Intersect operation to make the text mimic the curve of the Scale.
The other copy would be used in a 3D Subtract operation to create the recesses in the Scale. (04 pix)
Now the '3D Intersect' numbers are moved back the same distance. (05 pix)
I went to "Options / Advanced Preferences" and temporarily turned on "Transfer Materials".
I 3D Subtracted the hash marks from the Scale and waited.......... (06 pix)
I found that with using a cylindrical object for the hash mark, they should stand just a bit ahead of the edge, otherwise anomalies appear (incomplete subtractions).
Once completed, I went back to Advanced Preferences and turned off "Transfer Materials".
When rendered, the material that was on the hash marks should show in the recesses. (07 pix)
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Windows 10, 64-bit