With the Mitutoyo 145-186 inside micrometer, you reliably inspect internal dimensions of bores, grooves, and cylindrical workpieces. Featuring a 25 to 50 mm measuring range and a fine 0.01 mm graduation, it gives you the control needed for quality inspection and precision machining tasks. The wear-resistant, carbide-tipped measuring faces ensure consistent accuracy of ±0.006 mm throughout demanding workshop use. Thanks to the integrated spindle locking clamp, you can lock the position securely to read your measurements without accidental shifting.