461920
Laser Light Source used for greater accuracy and longer measuring distance, Make non-contact RPM measurements of rotating objects, Use reflective tape on object to be measured and point the integral laser, Large 5 digit LCD display with backlighting, Memory button for Last/MAX/MIN readings, Counter function counts up to 99,999 revolutions, Rugged, double molded housing, Complete with 9V Battery & Reflective Tape.