Features: Specifications: See picture Range: 16-17" Accuracy: ±.00035" Frame has a hammertone baked enamel finish for durability Scale is laser etched on 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″ and 0-25mm models Supplied in a fitted plastic case The Mitutoyo 16-17".0010" Graduation Ratchet Stop Mechanical Outside Micrometer 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 provides uniform pressure on a workpiece for precise, repeatable measurements. The friction thimble models allow for constant-force measurement for single handed operation.