Possibly one of the most important tools you will ever use!

Provides a quick and easy way to sort cases by neck wall thickness and uniformity. This tool allows you to accurately measure the neck  wall thickness of the cartridge case and determine its uniformity, (see below Tech – Talk – Case Neck Uniformity.)

Two mandrel sizes are supplied to allow measurement of all cases from .17 cal. to .338 cal. including cases with small (.060) flash  holes. For your convenience the mounting base allows direct  attachment to your reloading bench, or use the Redding No. 30520 double “C” clamp.

Pilot stops are required for each caliber. Two pilot stops are supplied with the tool, #06121, .22 cal. and #06130, .30 cal.