Hardened stainless steel construction. Matte, non-glare finish. Range of 0-6.0". 0.100" direct reading per revolution. 0.001" graduations. Accurate to +/- 0.001". Four-way measurement capability: inside, outside, depth and step. Shockproof movement. Clear plastic lens. Thumb lock. Dial easily zeroed. Lock screw holds dial in position for precise measurements. Fitted hard plastic storage case included.