Clymer 9mm Luger Go Clymer Headspace Gauge
Clymer 9mm Luger Go Clymer Headspace Gauge, The only way to accurately measure and test the length of the chamber of the rifle. Essential when chambering a new barrel to ensure a tight, accurate, safe chamber. Whenever you buy a used gun, always check the headspace before firing. Gauges are etched with "Go," "No-Go," or "Field" and caliber/ gauge name for easy identification. Both Forster and Clymer gauges are made to SAAMI specs. Mfg: Clymer SPECS: Machined steel.