产品优势描述：

Wide measuring range & high resolution，Contact and non-contact two kinds of measurement

Can store 99 sets data

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.

产品特征：features

Display：5 digits, 18mm (0.6-inch LCD screen)

Accuracy：±（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