Digital Tachometer Handheld Contact Motor Tach RPM Meter LCD Speedometer GM8906
Resolution: 0.1RPM (0.5 ~ 999.9 RPM) / 1RPM(above 19999RPM). Large LCD screen display for clear reading with low battery indication and auto power off function. 18 12.5 5.3cm / 7.1 4.9 2.1in.