The Mitutoyo 193-211 Digital Outside Micrometer with Digit Counter has the following specifications: ● Range: 0-1″● Graduations: .0001″ (obtained by vernier)● Accuracy: +/- .0001″● With Friction Thimble Features: ● Available in Inch and metric● The digital outside micrometers are available with ratchet stop for repeatable measurements on your workpieces. A few models have a frictions thimble.● Mechanical digit counter allows easy measurement readings to .001″ or .01mm● Carbide facing on the spindle and anvil resists wear to keep surfaces flatter with longer accuracy● A spindle lock provides secure locking of the measurement position● Satin chrome finish on the thimble and sleeve resists rust and reduces glare● Includes a standard bar except for 0-1″ or 0-25mm● Supplied in fitted plastic case Technical Data: ● Technology: Digit counter● Units: Inch● Parallelism: 0.00008″ or less● Measuring Faces: Carbide tipped● Remarks: .0001″ reading is obtained with vernier