Item Type:Digital Tachometer <br>Material: ABS <br>Purpose: For Speed Measurement of Tire Bearing Blades <br>Battery: 1.5v 4 x AA(Not Included) <br>Measuring Range: Photo TACH <br>2.5 to 99,999RPM <br>0.5 to 19.999RPM <br>Surface Speed: (m/min.) <br>0.05 to 1.999.9 (m/min.) <br>Resolution: Photo Speed <br>0.1 Revolutions (2.5 to 999.9RPM) <br>1rpm (over 1000RPM) <br>Speed Mode: <br>0.1RPM (0.5 to 999.9RPM) <br>1RPM (over 1000RPM) <br>Surface Speed: (m/min) <br>0.01 m/min. (0.05 to 99.99m/min) <br>0.1 m/min (above 100m/min) <br>Accuracy: ±(0.05%+1 Digit) <br>Sampling Time: 0.8 M/s (over 60 RPM) <br>Test Range Selection: Automatic <br>Sensing Distance: 50 to 500 mm/2 to 20 Inches (photo) <br>Time Base: Quartz<br>1、Fast Accurate Measurement: Provides fast and accurate RPM (revolutions per min) measurements of rotating objects. <br>2、Automatic Memory Function: Maximum value, minimum value, and the last measured value up to 96 sets of measurement data. <br>3、Features: High accuracy ±(0.05%+1digital), range selection is automatic range, sampling time is 0.8m/s. <br>4、Multi Mode: 5 digit super long range, multi parameter mode is optional, time base adopts quartz oscillator. <br>5、Easily Use: Can be measured close to the object, strong anti interference, 80 cm distance measurement.Ship without battery.1 x Digital Tachometer<p><p>2 x Speed Reflector</p><p>1 x User Manual</p></p>