Concentricity gauge for reloading

thingiverse

Case neck and bullet concentricity gauge for reloading (supports for 308 and 223). Kind of based on one of the $300+ aluminum ones I've seen. Uses pretty much any dial micrometer, I used a $25 Wen off Amazon, seems to do well. Hardware is primarily 10-24 x 1/2". The screw holding the clamp to the upright is 20-24 x 3/4", and the clamp screw is 8-32 x 3/4". I used SAE hardware because a) it's what I had laying around, and b) SAE in stainless is easier and cheaper to find near me. The second slot is currently used for storing the extra case support, but I'm working on a disc/o-ring roller that will also slide in and mount there. The "rollers" are 7x6mm ball plungers off Amazon. Everything is oriented the way I printed it, except the clamp, I turned it 180* so it would require less support. I only used supports on that piece, and a brim only on the T-nuts.