This text is 0.5mm high and engraved 0.05mm deep.
OK, it is not that good and would probably make a watchmaker cry if he saw it but the purpose of this (and the previous examples) was to test the accuracy of the prototype tool setter and so far, I am extremely pleased with the results.
I have taken on Stirlings suggestion of incorporating an over-travel switch (just in case) to operate a ‘limit’ input. This will involve a re-design of the PCB and the connecting cable, plug and socket will then need 4 wires instead of 3.
Something to keep me off the streets for a while.

Tweakie.