Contact Tachometer

Primarily used for motor speeds.
-Features & Benefits :

Jumbo 5-digit LCD display
Auto ranging
Also measures linear speeds (of conveyors, e.g.)
Memory: Min/Max/Last

Specifications :
Measurement Range: 0.5 to 19,999 RPM(rotational); 50mm/min. to 2 km/min./(linear)Accuracy ±0.05% + 1 digitRotational Resolution: 0.1 RPM(0.5 to 999 RPM); 1 RPM (over 1000 RPM)Power Source: 4 AA batteries (included)
Includes :
RPM adapters
Hard case
Batteries
User s manual