Fast and accurate rpm and surface speed measurements to 20,000rpm
The 461891 is a contact Tachometer. Surface wheels measure contact surface speeds (10 to 9,999 rpm) of rotating objects. The memory button holds last reading and recalls min/max readings display. Complete with wheels for linear surface speed (0.2 to 6560 feet/minute; 0.05 to 1999.9 meters/minute) or RPM measurements. Comes with cone tip, flat tip and spare wheel for surface speed measurements, four AA batteries, carrying case, and user manual.
|rpm||0.5 to 20,000|
|ft/min||0.2 to 6560|
|m/min||0.05 to 1999.9|
|Max rpm Resolution||0.1rpm|