Project Cheap & Nasty Updated With Back Story

Checking IH with a mic? Do you wear a top hot and gold chain for assembly?

: D

You have options.

1) Stack washers under retainer, measure washers with dial caliper or micrometer.

2) make a spacer of known length out of pipe and use valve spring shims to fine tune the measurement

3) Use a ruler or yard stick

It's not a space ship.
Oh I know. But I have two 1.6 - 2.2 mics already, so I do need a short one. Plus I have lots of valve spring shims, so there really no reason not to do it right. I could use a machinist's ruler easily, but I need a short mic anyway.