Bought to set up a zero turn mower. You have to adjust the speed of each rear wheel driven by hydraulic motors. I glued a reflective tape to each rear wheel, picked it up and started. Checking the speed of each rear wheel. The tachometer takes a minute to stabilize its readings. They could be set with an accuracy of 1/2 rpm. Good work. Ask two earth magnates to make reflective dots for use on other metal objects, it will be easier than using strips of reflective tape. Basically, I am satisfied with the devices.
Non-Contact Handheld Digital Tachometer for Precise Measurements
3 Review
Handheld Digital Laser Tachometer Non-Contact RPM Meter Motor Speed Gauge Gun Measuring Range: 2
3 Review
π Enhanced Precision and Functionality: Protmex Reflective Tachometer
3 Review
FITNATE Non Contact Tachometer - Enhanced Accuracy with Battery Operation
3 Review
π Dioxide Controller for Digital Gas Monitoring
5 Review
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review
Digital multimeter RGK DM-12
6 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