Lyman Pro Maximum Cartridge Gauge 45 ACP Silver. Our Pro Maximum Cartridge Gauges check pistol ammunition for case length diameter and overall cartridge length. This inspection is considered mandatory by top competitive shooters who demand 100percent reliability for their competition ammo. Specifications for Lyman Pro Maximum Cartridge Gauge: Manufacturer: Lyman Fabric/Material: Stainless Steel Weight: 0.2 lb Color: Silver Features of Lyman Pro Maximum Cartridge Gauge Precision machined from corrosion resistant stainless steel for a long rust-free life Outside flats prevent rolling O-rings provide a non-slip grip Package Contents: Lyman Pro Maximum Cartridge Gauge Lyman 7705003: Pro Maximum Cartridge Gauge 45 ACP Silver