Mitutoyo 293-831-30 Digimatic Micrometer, Range: 0-1"/0-25.4 mm New Ratchet thimble models improve one-hand operability Anti-slip finish for improved grip while take measurements Electromagnetic Absolute sensor with improved resistance to environmental conditions such as dirt, oil and water that can cause false readings Includes a Mitutoyo Certificate of Calibration and meets the ISO/IEC 17025 Anti-slip finish for improved grip while take measuremnts