1. LCD Display: 5 digits, 18mm 2. Laser photo tachometer: 2.5 to 99,999 RPM 3. Contact Tachometer: 0.5 to 19,999 RPM 4. Surface Speed: 0.05 to 1,999.9 m/min 5. Laser photo tachometer: 0.1 RPM (2.5 to 9999.9 RPM) ; 1RPM (over 1000RPM) 6. Contact Tachometer: 0.1 RPM (0.5 to 9999.9 RPM); 1RPM (over 1000RPM) 7. Surface Speed: 0.01 m/min. (0.05 to 99.99 m/min.); 0.1m/min. (over 100m/min) 8. Sampling time: 0.8 sec. (over 60 RPM) 9. Test range selection: automatic 10. Memory: max value, min value and last value 11. Wide detecting distance: 50 to 500 mm (or 2 inch to 20 inch), applicable to laser photo tachometer 12. Time base: 6 MHz crystal oscillator 13. Used 3 x AAA batteries (not include) 14. Wide measuring range and high resolution 15. Measures exact RPM with no guessing or errors 16. Memorized the last value, max. value and min. value 17. Low battery power indication 18. Size: 18.4cm x 7.6cm x 3cm
