CSP Universal Set

Answer all your questions about the guns you own or are thinking of buying with CSP Barrel Readers, accurate to .001". Each comes in a wooden case with instructions and information on American and foreign guns. Measure choke, bore, chamber and forcing cones in 4 gauges — 12, 20, 28 and .410 — accurate to 0.001". Solid-brass parts come in oak case. Includes complete instructions, gauging rings and heads.