The Mitutoyo 103-137 (M110-25) is an industry-standard mechanical outside micrometer delivering 0–25 mm measurement capacity with 0.01 mm graduation. Featuring micro-lapped carbide-tipped measuring faces, a glare-free satin-chrome finish on sleeve and thimble, and a constant-force ratchet stop, it provides battery-free, workshop-grade dimensional precision for machinists, toolmakers, and QA inspectors.

Features & Benefits

• High-Durability Mechanical Reliability: Completely battery-free analog mechanism guarantees perpetual readiness on machine shop benches and assembly lines without electronic failure modes.

• Carbide-Tipped Measuring Contacts: Precision-ground and micro-lapped carbide faces maintain strict flatness ($0.6\,\mu\text{m}$) and parallelism ($2\,\mu\text{m}$) against abrasive materials.

• Clear, Glare-Free Vernier Scale: Satin-chrome finish on both thimble and sleeve combined with clean laser-etched black graduations prevents parallax and reflection errors.

• Constant-Force Ratchet Stop: Applies uniform measuring force ($5\text{ to }10\text{ N}$) on every measurement, ensuring user-to-user consistency regardless of operator technique.

• Rigid Hammertone Enamel Frame: Tapered cast frame allows easy access into narrow workpiece slots, recesses, and lathe chucks.

• Positive Locking Spindle Clamp: Cam-actuated lever locks spindle firmly in position for comparison gauging and preserving measurements for physical logging.