The Mitutoyo 103-138 Outside Micrometer is a precision mechanical instrument designed for accurate measurement of external dimensions between 25 and 50 mm.

Key Features
25–50 mm external measuring range
Fine 0.01 mm graduation
Accuracy of ±0.002 mm
Ratchet stop for consistent measuring pressure
Spindle lock for retaining measurements
Carbide-tipped measuring faces
Micro-lapped contact surfaces
Satin-chrome sleeve and thimble
Clearly engraved metric graduations
Rigid, hammertone-finished frame
Suitable for production and inspection work