External Micrometer 0-25mm. Ideal for general workshop and machine use. Micro-lapped tungsten carbide tipped anvils. Enamelled frame with matt chrome finish thimble and sleeve. Graduated scale reading to 0.01mm. Ratchet stop on thimble for exact, consistent readings. Positive spindle lock lever. Supplied with adjustment spanner. Hardened steel spindle with ground threads for smooth action.