The Case Neck Thickness Gage is used in conjunction with the Concentricity Tool. The dial indicator measures in 0.0005 increments. This is used to assess neck wall thickness and concentricity during neck turning.
Comes with these trimmer pilots:
1- 22 cal | .224"
3- 6mm | .243"
4- 25 cal | .257"
5- 6.5mm | .264"
6- 270 cal | .277"
7- 7mm | .284"
9- 30 cal | .308"
13- 338 cal | .338"
15- 35 cal | .358"
19- 45 cal | .452"