Manson Reamers Absolute Zero Headspace Comparator with Fowler Digital Indicator

The Manson Reamers Absolute Zero Headspace Comparator was designed to make life easier for the advanced shooter and reloader by allowing precise measurement of ammunition, case, and chamber headspace. With this information, the shooter/re-loader will be able to fine-tune clearances and fits between his ammunition and chamber, with resultant improvements in accuracy and case life.In addition to the Dial Indicator and Stand, the Comparator is supplied with Datum Blocks of precise inside diameter and length. These are used in conjunction with the supplied chart - "Cartridge List" - to determine actual headspace of factory or reloaded rounds, as well as fired cases. By measuring headspace of a fired case, the shooter can come very close to knowing the headspace of the chamber in which the round was fired. This information can be useful if he has several rifles in the same caliber and wants to know if the same re-loads may be used in all of them, or if one has significantly different hea...