
I was looking for rotating objects and bought five tachometers. This is the most expensive thing I've bought. I like the fast reading and the backlit display. But I'm disappointed that about five percent of the readings are completely wrong. I'm sure I'm wrong because when I plot the topside RPM droop readings, some of the readings are off the smooth curve by hundreds of rpm.

π Neiko 20713A Contact Digital Tachometer
3 Review

π Enhanced Precision and Functionality: Protmex Reflective Tachometer
3 Review

FITNATE Non Contact Tachometer - Enhanced Accuracy with Battery Operation
3 Review

Handheld Digital Laser Tachometer Non-Contact RPM Meter Motor Speed Gauge Gun Measuring Range: 2
3 Review

π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
6 Review

π Dioxide Controller for Digital Gas Monitoring
5 Review

π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 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