Originally Posted by David Nebenzahl
The soda can sidewall I used was .004 inch thick (one sometimes wonders how they hold the soda in), but for my SQ-Hole body cap adapter, I used 2 mil brass shim stock from indeed, a K&S selection.
From days of mucking about with circuit boards and the like, I have a direct reading microscope that has a scale. The only problem is it's hand held with an angled reflector fitting on the end and a bit tedious to use. I'm pretty convinced my measurements are within .0005, which is close enough.