Specifications:Range: 0-25.4 mm / 0-1 inchResolution: 0.01mmWorking Temperature: 0~40Power: SR44/LR44 1.5V batteryProduct size: 11.5 * 6 * 1.5cm / 4.5 * 2.4 * 0.6inProduct weight: 35g / 1.3ozPackage size: 16 * 9.5 * 2cm / 6.3 * 3.7 * 0.8inPackage weight: 50g / 1.8oz Features:Large LCD display for easy reading.Zero setting at any position.Manual power on/off.Metric/inch system interchange.Suitable for measuring tread depth.