Turns any ratchet or breaker bar into a 1/2" or 3/8" torque / angle measuring tool. Includes adapter from 1/2 to 3/8 Can be used to recalibrate any type of torque wrench. 30 memory settings for torque reading and 30 for angle reading. Peak and track mode for torque reading and ratchet mode for angle reading. Color changing display and audible alarm to indicate progress when reaching target value (green backlight below 80%, orange above 80% and red at 100% or above) 180 degree view flip screen. Large LCD display with LED backlight. Clockwise and counter clockwise operation. Power saving mode after 2 minutes of inactivity. Battery life indicator. 1/2 drive input and output Units of measure: NM, Kg.cm, Ft./Lbs., lb.in Torque range: 20 ~ 370 NM Angle range: 1 ~ 720 degree Torque accuracy: CW 1.5% / CCW 2.5% Angle accuracy: 2% Battery life: 48 hrs (continuous operation) / 1 year (standby mode) Digital torque and angle reading.