The Mitutoyo 340-251-30 Digimatic Outside Digital Micrometer features a ratchet stop function and interchangeable anvils for measuring a wide range of workpiece sizes and material types. The Mitutoyo digital micrometer with interchangeable anvils and ratchet stop is ideal for measuring metal and non-metal workpieces by controlling the amount of spindle force. A ratchet-stop mechanism provides uniform pressure on a workpiece for precise, repeatable measurements. Interchangeable anvils allow for measuring a wide range of workpiece sizes. Measurements are displayed on a coolant-proof, easy-to-read LCD readout.