Professional Shotgun Chamber Length Gauge with Integral Choke Gauge

A very compact and accurate tool for every shotgun, from 10 gauge down to the .410 bore. A "must" for the shotgun collector. Brass construction. Length 4 1/2", width 7/8". Accurately measures chamber and choke constrictions of 10ga., 12ga., 16ga., 20ga., 28ga., .410. shotguns. Brass construction. Length 4 1/2", width 7/8".