♦  Holds either the zero setting or measured value at any position for differential measurements.
♦   Has a serial output to interface with a computer or printer to process data.
♦   Automatically turns on by moving the main scale or by pressing ON/OFF key.
♦   Automatically turns off after 4 minutes of inactivity conserving battery power.
♦   Measures: 0-20mm
♦   Resolution: 0.01mm
♦   Accuracy: ±0.03mm
♦   Working Temperature: 0°C to 40°C
♦   Humidity: 80%
♦   Operating Power: One silver oxide battery, SR44, 1.55V
♦   60°, 70°, 80° & 90° Angle of preparation
♦   Does NOT measure undercut