A tachometer is a device that measures the angular speed of a rotating shaft in terms of revolutions per minute (RPM). The Extech 461750 tachometer features surface wheels that measure contact surface speeds of rotating (10 to 9,999 RPM) and moving (3 to 6,560 ft./minute; 1 to 1999.9 m/min) objects.
Large easy-to-read LCD display
Hold button freezes displayed readings
Ergonomically designed and pocket size housing with protective finger guard
Surface wheels enable tachometer to measure linear surface speeds in ft/min, m/min, and yd/min
Complete with 9-volt battery; 461700 includes reflective tape and 461750 includes surface wheels
