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 User Manual