Initially I had a little trouble getting accurate readings when checking speed measure my lathe. It turns out that the background of what you're trying to measure needs to be completely non-reflective to work. The spindle on my lathe, though old, dirty, and dull, looked like it would work, but I couldn't read it very well. reflective band across the band. It worked great.
π Enhanced Precision and Functionality: Protmex Reflective Tachometer
3 Review
Handheld Digital Laser Tachometer Non-Contact RPM Meter Motor Speed Gauge Gun Measuring Range: 2
3 Review
π Neiko 20713A Contact Digital Tachometer
3 Review
FITNATE Non Contact Tachometer - Enhanced Accuracy with Battery Operation
3 Review
π‘οΈ Continuous Temperature Monitoring with Relative Humidity Integration
4 Review
π§ UEi Test Instruments DAFM3B Digital Multimeter
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
π Dioxide Controller for Digital Gas Monitoring
5 Review