Forster Datum Dial Ammunition Measurement System Complete Kit in Storage Box

The Forster Datum Dial Ammunition Measurement System gives you the data you need to refine your case sizing operations. This complete kit includes one Datum Dial tool for checking cartridge cases, Both bullet/Cartridge dials for use with 17 cal, 204, 224, 243, 257, 264, 277, 284, 308, and 338 bullets, laminated chart showing common datum diameters, instructions and storage box. A user supplied caliper is required. The Datum Dial provides a relative measurement between the base of a case to a dat