Item Digital Height Gauge Counter Type Electronic Digital Mechanism Fine Adjust Construction Steel Display LCD Resolution 0.0005 in/0.01 mm Range 0 in to 12 in/0 to 300 mm Accuracy +/-0.0015 in/0.04 mm Base Cast Iron Screw Clamp Lever Locks Scriber at any Position Battery (2) 3V CR2450 Features Large Positive Action Keypad Manual On/Off Plus a Built in Automatic Off After 30 Minutes of Nonuse Plus or Minus Indication Allows Reading in Proper Direction Includes Scriber