The Hornady case neck thickness gauge tool lets you accurately measure case thickness at the neck. This is a tool for extreme precision reloaders who accept nothing less than perfection. Gauge is accurate to .0005" and attaches securely to the Concentricity tool and Cam-Lok trimmer system.

This accessory to the Concentricity Tool offers the next step in ultra-precision reloading. Its .0005 increment dial indicator helps identify neck thickness variations so you can sort and measure case necks or verify your neck turning operation– ultimately enhancing accuracy.

Includes Pilots:
1 - .224"
3 - .243"
4 - .257"
5 - .264"
6 - .277"
7 - .284"
9 - .308"
13 - .338"
15 - .358"
19 - .452"