The Mitutoyo outside micrometers series 103 features either a ratchet stop or friction thimble that applies constant measuring force on a workpiece for exact repetitive readings. Available in metric and inches. The Mitutoyo outside micrometer is ideal for measuring metal and non-metal workpieces. A ratchet-stop mechanism on the 103-260 provides uniform pressure on a workpiece for precise, repeatable measurements. The friction thimble models allow for constant-force measurement for single-handed operation. SPECIFICATIONS ● Range: 0-1″● Accuracy: ± 0.0001″● Graduations: 0.0001″● With Ratchet Stop● Tapered Frame● Mass: 175g FEATURES ● Frame has a hammer tone baked enamel finish for durability● Scale is laser etched on the thimble and sleeve● Carbide facing on the spindle and anvil resists wear to keep surfaces flatter with longer accuracy● Speeder is always available for quick rotation of the spindle● Comes with standard bar except for 0-1″● Supplied in a fitted plastic case