产品优势描述：
Wide measuring range & high resolution，Contact and non-contact two kinds of measurement
Can store 99 sets data
Dial 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 ures maintenance free performance for many years. The housing has been carefully shaped to fit comfortably in either hand.
产品特征：features
Display：5 dis, 18mm (0.6-inch LCD screen)
Accuracy：&plun;（0.05% + 1 digi）
Message range： photo tach： 2.5～99，999 RPM
Contact tach：0.5～19，999 RPM
Surface tach：0.5～1999.9（m/min）
Photo tach resolution：0.01 RPM (2.5 to 999.99 RPM)
0.1 RPM (1000 to 9999.9 RPM)
1 RPM (over 1,0000 RPM)
Contact tach resolution：0.01 RPM (2.5 to 999.99 RPM)
0.1 RPM (1000 to 9999.9 RPM)
1 RPM (over 1,0000 RPM)
Surface tach resolution：0.1 m/min (0.5 to 999.9RPM)、
1 m/min （over 1000RPM）
Test Range Select：Automatic
Memory：Last value, Max. Value,Min. Value、Can store 99 sets data
Detecting Distance：50 to 500 mm
产品描述：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
包装信息：stand corton
Packing details：gift box
carton：53 x 42 x 41.5 CM
Packing quantity：30 pcs/ctn
G.W.:16 kgs N.W.：15 kgs
