With the Mitutoyo 115-215 outside micrometer, you measure the wall thickness of tubes, pipes, and curved rings with absolute confidence. The spherical anvil and spindle provide accurate point contact on curved profiles, preventing the bridging errors caused by flat measuring faces. Featuring a 0 to 25 mm measuring range and a fine 0.01 mm graduation, it allows you to verify tight tolerances in machining and quality inspection. The integrated ratchet stop guarantees consistent measuring force for repeatable precision every time. It gives you complete control over your critical dimensional checks.