Pop Rivet Sizing Gauge

My pop (blind) rivets got all jumbled up, and it can be a bit hard to judge the size by eye since they vary by only 1/32" in diameter. So I made a small test-fit gauge to quickly get their diameter and grab depth. It will measure diameters from sizes 3 to 6 (in 32nds of an inch) and lengths from 2 to 12 (in 16ths of an inch).