Nicety Digital Laser tachometer High Precision velocity Tester Portable Non-Contact Tach Gauge Tester LCD Display with Backlight

This tachometer with high precision and portable size comes with a little bag, convenient to carry. It can be widely used to measure the rotating speed of impeller, roller and shaft.
Features:
This instrument is a tachometer with high precision and quick response.
Can be widely used to measure the rotating speed of impeller, roller and shaft.
With 3pcs of reflective tape to ensure the accuracy of measurement.
Can set up the impeller quantity: 1-9.
Max. and min. value display.
2 measuring units: rps or rpm.
LCD display with backlight.
Auto power off.
Specifications:
Display: 5 digits LCD Display
Units: rpm, rps
Laser Power: 5mW Class 2
Measuring Range: 100-3000rpm; 1.7-500rps
Resolution: 0.1rpm(100-999.9rpm); 1rpm(1000-30000rpm); 0.1rps(1.7-100rps); 1rps(100-500rps)
Accuracy: ±(0.1%n+5d)rpm,(100-9999.9rpm); ±(0.02%n+2d)rpm,(10000-30000rpm)
Sampling Rates: 1/sec
Number of Impeller Setting: 1-9
Time Base: Quartz Crystal
Circuit: Exclusive one-chip of microcomputer LSI Circuit
Detecting Distance: 3.9-15.7"(100-400mm)
Operating Condition: -10~50°C; 10%-90%RH
Storage Condition: -20~60°C; 10%-75%RH
Power Supply: 3 * 1.5V AAA Batteries(not included)
Item Size: 14 * 5 * 2cm / 5.51 * 1.97 * 0.79in
Item Weight: 72g / 2.54oz
Package Size: 15.5 * 7 * 4cm / 6.1 * 2.76 * 1.57in
Package Weight: 130g / 4.6oz
Package List:
1 * Tachometer
3 * Pcs of Reflective Tape
1 * Bag
1 * User Manual(English)