* Measures rotational and surface speed
* Built-in memory
* Digital display
* Auto power off function
* Easy to select units and mode functions
* Contact and non-contact measurement
* Select rpm using infrared beam or adapter: m/min, m/sec, ft/min, ft/sec, in/min, m, ft, and in.
* Includes 6 adapters, carrying case, reflective tapes batteries and users manual