2.5" LCD Digital Tachometer (3 x AA)
Color: Grey - Model: JM-DT-2235B - Plastic case material - 2.5" LCD display - Test range: 2.5RPM ~ 19999RPM - Resolution: 0.1RPM (2.5~999.9RPM) / 1RPM (over 1000RPM) - Accuracy: +/- (0.05% + 1 digit) - Sampling time: 0.8 second (over 60RPM) - Time base: 6MHz quartz crystal oscillator - Auto switch range - Power consumption: 35mA - Auto record max/min value & the last measured value - Powered by 3 x AA batteries (not included) - Widely used to measure car tire speed or motor speed etc. - Comes with Chinese manual & 2pcs detectors