Proper tool to measure 90 degrees for pins
Is there a good tool that I can measure or make sure that a pin is 90 degrees in relation to the rest of the part as in a 1911 thumb safety or slide stop?
I've tried using a straight edge or triangle but the area that joins the pin to the part is beveled & I coudn't get an accurate measure. Most of these rulers have a very sharp edge.
I know that I can just place the part into the gun, but sometimes I'm lazy in having to disassemble a gun to test fit a part. There are times I just like to keep some parts as spares without pulling apart my gun.
Thanks in advance!