[DonVoigt]

Ron,
thanks for the link.

Simple enough to build.

I'd have to do some reading to see if anyone wrote about the mfg/hardening of trigger levers.
If trigger levers are really hard to the point of being brittle-
seems like a trigger pull adjusting tool that required annealing, re-hardening, and then re-annealing to something less than glass hard would not be very useful.