Specifications : • Low Cost Best Performance • Range : 1.2 ~ 200mm • Resolution : 0.1 mm/0.001″ • Accuracy : ±0.5% + 0.1 • Sound Velocity : 1000 ~ 9000 m/s • Power Supply : 4 × 1.5V AAA battery • Operating Temp.: 0 ~ 50 ºC Humidity : <90%RH