In a nutshell
The right choise for
Take full control of your machining accuracy with the Mitutoyo 102-302 M310-50 outside micrometer, designed for precise measurements between 25 mm and 50 mm. Perfect for inspecting turned, milled, or ground components, its clear 0.01 mm graduation delivers reliable readings beyond standard caliper precision. The integrated ratchet stop ensures a constant measuring force for highly repeatable results across every inspection, while the heat-insulating frame prevents hand warmth from causing thermal expansion errors. Built with durable carbide-tipped measuring faces to withstand daily shop-floor use, it comes supplied with a 25 mm setting standard so you can verify calibration immediately.