Reloading ammunition requires attention to many critical cartridge dimensions, including case length, neck and base diameters, overall length, primer pocket depth, etc. Verifying these dimensions is quick and convenient with the Frankford Arsenal Calipers and Micrometers. The calipers are accurate to within .001" and the Micrometers are accurate to within .0001". The calipers allow you to measure inside and outside diameters, plus depths. You will find them useful for many measuring tasks on and off the reloading bench. Packaged in a convenient, protective case.
When accuracy is the issue, all aspects of the cartridge case must be considered. Concentricity of the case neck is a prime consideration. Inconsistent neck wall thickness will cause the seated bullet to be misaligned with the bore. To measure neck thickness, you need a measuring tool designed specifically for this task. The Frankford Arsenal Case Neck Micrometer measures neck thickness to .0001".