This is normal. It seems to work, but not fast, and I daresay this is accurate enough for those assembling a sports engine. enough for a regular lawnmower. My freaky, I have to remove the batteries to turn it off. And it's a guessing game as to whether it works the way it's supposed to. But when it happens, it happens.
Handheld Digital Laser Tachometer Non-Contact RPM Meter Motor Speed Gauge Gun Measuring Range: 2
3 Review
π§ Streamline Your Work with Loos Co PT 1 Professional Hands-Free Device
3 Review
FITNATE Tachometer Batteries Reflective Instruction
3 Review
π Neiko 20713A Contact Digital Tachometer
3 Review
π₯ Advanced Testo Wireless Hot Wire Anemometer Technology
4 Review
π Dioxide Controller for Digital Gas Monitoring
5 Review
π¬οΈ Advanced 3-in-1 Indoor Air Quality Monitor with CO2/RH/Temp Data Logging and Audible Alarm - NDIR Sensor Technology
8 Review
Portable Handheld Manometer π for Accurate Pressure Differential Measurement
5 Review