Feature:1. Adopts photoelectric technology, anti interference technology and other advanced technology to realize noncontact speed measurement, and to detect the state of moving object and surface defects.2. With large LCD backlight display screen, convenient to read data in the dark.3. The measurement range is sixty forty thousand RPM, with fine and coarse adjust, easy to measure.4. Digital control adjustment flash frequency, low power consumption, with speed storage, improves the efficiency of measurement.5. Handheld and noncontact measurement, portable and safety.6. Wide range of applications,such as all kinds of rotor,motor,fan,gear joggle,tremor equipment diagnose etc.Specification:Condition: 100% Brand NewItem Type: Stroboscope TachometerMaterial: PlasticColor: As shown in the pictureMeasuring Range: Sixty forty thousand RPMRPM:R / minCoarse Tuning/Fine Tuning<1000RPM:Coarse Tuning: 10RPMFine Tuning: 0.1RPMCoarse Tuning/Fine Tuning1000RPM:Coarse Tuning: 100RPMFine Tuning: 1RPMAccuracy: 0.05Resolution:<1000RPM: 0.1RPM1000RPM: 1RPMTime Base: 10MHz quartz oscillatorDisplay: 5 digit LCD display with backlightMaximum Display: Forty thousandPower Supply:4 x 1.5V AA battery(UM-3) (Not included)Power Loss: About 60mA.Package List:1 x Stroboscope Tachometer(Battery Not Included)1 x Instruction ManualNote:1. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.