This precision instrument is designed for the direct measurement of major countersink diameters. It provides fast, accurate, and repeatable results for shop floor or gage room environments. By pressing the spring-loaded, conically ground gaging plunger into the countersink, operators obtain a direct reading of the diameter as specified on engineering prints. It is suitable for applications including hydraulic fittings, valve seats, tube flares, and production machining.
- Measures countersink diameters from 0.36 in. to 0.56 in.
- Dedicated 100° angle for precise measurement
- Guaranteed accuracy of 0.0005 in.
- Dial reads in 0.002 in. or 0.05 mm increments
- Peak hold mechanism allows for one-hand operation
- Base plate accommodates flat, concave, or convex surfaces
- Supplied with a calibrated setting ring and foam-lined storage case