[Contact & Non-contact Tachometer]: The digital tachometer can measure rotational speed with or without contact, dual mode meets your testing needs. The non-contact speed range: 3~100000RPM; contact speed range: 3~19999RPM, 0~99999m, 0~1999.9m/min, 0~9999.9ft/min.
[High precision]: The rpm meter has a high precision. Non-contact accuracy: ±(0.05%FS+1RPM); Contact accuracy: ±(0.1%FS+1RPM). Sampling time is just 0.8 sec (above 60 rpm).
[Wide application]: Industrial Grade tachometer, suitable for measuring the speed of motors, fans, pumps, turbines, gears, and other rotating objects.
[Package included]: The digital tachometer tool kit includes a tachometer, 4pcs detachable adapters, 2pcs 1.5V AAA batteries, 2pcs reflective markers, a carton box and a user manual.