This precision tool shows you to check all the critical dimensions that make a shotgun pattern well. Measures choke, bore diameter, chamber and forcing cone dimensions. Accurate to .001 of an inch. This 4 gauge set includes 12, 20, 28 and 410 and comes packaged in a solid oak case with solid brass hardware. Comes with instruction and extensive information for American and foreign guns.
- 4 Gauges, 12, 20, 28, & 410
- Solid oak case with brass hardware.
- Instructions included for American and foreign guns.
- Measures chokes, bore diameter, and chamber and forcing core diameter.
- Accurate to .001"