Characteristic
Wide measuring range & high resolution
Digital display gives exact RPM（surface speed、line length） with no guessing or errors
The last value/max, value/rain, value will be automatically stored in memory and can be displayed by turn anytime
The use of durable, long-lasting components, including a strong, light weight ABS-plastic housing assures maintenance free performance for many years. The housing has been carefully shaped to fit comfortably in either hand.
Technology features
Display：5 digits, 18mm (0.6-inch LCD screen)
Test Range：0.5 to 19,999 RPM (r/min)
Resolution：0.1 RPM (0.5 to 999.9 RPM)
1 RPM (over 1,000 RPM)
Contact tach：0.5 to 19999RPM
Resolution：0.1 m/min (0.5 to 999.9RPM)、1 m/min（over 1000RPM）
Surface speed：0.05 to 19999m/min
Resolution：0.01 m/min (0.05 to 99.99RPM)、0.1 m/min（over 100RPM）
Accuracy： (0.05%+1 digit)
Sampling Time：0.8 sec.(over 60 RPM)
Test Range Select：Automatic
Memory：Last value, Max. Value,Min. Value
Description
Time Base：6MHz Quartz crystal
Sampling time：0.5sec（over 120 RPM）
Range select：auto range
Circuit：Exclusive one-chip of microcomputer LSI circuit.
Battery： 3 * 1.5V AA
Power Consumption：Approx. 35mA (LED)
Approx. 30mA (Laser)
Operation Temp.：0 to 50°C(32 to 122°F)
Size：184 x 76 x 30 mm
Weight：204g (including battery)
Accessories：4 * 1.5V AA Battery、 3 x Reflecting tape marks、1 x User manual