Pratt & Whitney Measurement Systems, Inc. External Supermicrometer SuperMicrometer™ : Model B 250

If you're looking for a direct-reading vernier-style bench micrometer and an electronic size comparator for use in the calibration laboratory or on the production floor, look no further, the second-generation External Supermicrometer Model B provides durability, speed of measurement, and range of applications. The Supermicrometer is the most popular bench micrometer in the world that can measure just about any manufactured precision OD part, turned part, or gages such as pins, plugs, and threads including API, NPT, NPTF, BSPP, BSPT, UN (Unified), M Profile (Metric), ACME, Buttress, UTS, UNC, UNF, UNEF, UNS, BSW (Whitworth), BA, BSC, BSF, BSP, to name a few. The External Supermicrometer® Model B measures: Your Precision Parts Pin & Plug Gages External Thread Gages Dial / Test Indicators Taper Threads - Pipe Threads (API Gages) Dial Bore Gages Cylindrical Setting Gages Spheres Setting Masters / Setting Gauges Taps, Dies, and Cutting Tools Gears / Splines Feeler Gages