High precision expert dial gauges for precision measuring work Dial face with O-ring and internal housing sealing ensures unit is waterproof and dustproof Shock-proof mechanism prevents damage to the internal gears if the spindle is pushed abruptly Hardened SK quenched steel stem with specialty fastening to eliminate failure Superior quality spindle rack, pinions and gear trains ensure longevity Easy read design incorporates white dial face with black graduations and pointer needle Knurled Bezel provides a firm and secure grip Securely fitted back cover with four locking screws enables lug to rotate at 90 angles Manufactured to JIS B 7503 Made in Japan Specifications Type: Metric Graduation Range: 0.001 x 1mm Reading: 0 - 100 - 0 Indication Error: 1/10 Revolution - 2 m 1/2 Revolution - 2 m One Revolution - 3 m Two Revolution - 13 m Full Measuring Range - 3 m Retrace Error: 2 m Repeatability: 0.5 m Measuring Force: < 1.5N