Sinclair International ( Brownells) Concentricity Gauge With Dial Indicator

The Sinclair Concentricity Gauge is used to measure runout by rotating the case or loaded round on two sets of bearings that are captured in anodized aluminum blocks. Easy to actuate thumb levers on the bearing blocks make adjustments quick and easy. The anodized base plate makes for a stable platform. The indicator tower is designed to permit vertical and side-to-side adjustment of the dial indicator. The mounting block is designed for dial indicators with 0.375" mounts.