Features:
* The tachometer uses for noncontact measurement of rotation speed (RPM) or contact measurement of rotation speed (RPM), surface speed (m/min).
* Wide measuring range and high resolution.
* Large screen LCD display provides clear reading.
* White back light guarantee reading in any light environment.
* Automatically save Max, Min and last value, also save 96 set of continuous data.
* Low battery voltage indication.
* Easy switch between contact and photo mode.
* Surface speed wheel with groove to test surface speed or length of wire, cable, or rope conveniently.
* Smooth housing design, comfortable to hold and use.
* The instrument is delicate and rugged. It uses the durable, long-lasting components and a strong, lightweight ABS plastic housing.

Specifications:
* Model: SM6236E
* Display: 5 digits 18mm backlight LCD

* Range:
◆ Photo mode:
2.5 ~ 99999RPM
◆ Contact mode：
0.5 ~ 19999RPM
0.05 ~ 1999.9m/min

* Resolution:
◆ Photo Rotation Speed:
0.1RPM (0.5 ~ 999.9RPM)
1RPM (over 1000RPM)
◆ Contact Rotation Speed:
0.1RPM (0.5 ~ 999.9RPM)
1RPM (over 1000RPM)
◆ Surface Speed:
0.01m/min (0.05 ~ 99.99m/min)
0.1m/min (over 100m/min)

* Accuracy: ±(0.05%+1 digit)
* Sampling Time: 0.8 second (over 60RPM)
* Range Selection: Auto-switch
* Time Base: 6MHz quartz crystal
* Detecting Distance: 50 ~ 500mm (Photo mode)
* Power: 3 x1.5V AA Batteries (NOT included)
* Dimension: 155*70*35mm

Package List:
* 1 x Tachometer
* 1 x User Manual
* 3 x Reflective Paper
* 1 x Screw
* 4 x Tach-Accessories
* 1 x Photoelectric-Tach-Head
* 1 x Storage Case