Mitutoyo 193-211 Digit Outside Micrometer, Inch, Friction Thimble, 0-1" Range, 0.0001" Graduations, +/-0.0001" Accuracy Micrometer measures 0 to 1.0" with 0.0001" graduations and + or - 0.0001" accuracy, for taking outside diameter measurements Vernier scale with mechanical digit counter displays in inches for precise measurements Friction thimble to help provide uniform pressure for precise, repeatable measurements Measuring faces are flat and are carbide-tipped for durability Satin chrome finish on thimble for corrosion-resistance and visibility, and a hammertone baked-enamel finish with thermal shields on the frame for durability and heat resistance