The RPM33 is a combination contact and laser photo tachometer designed to quickly measure RPM, surface speed, and length with a single tool. It features a large 5-digit backlit LCD display and microprocessor-based design with quartz crystal oscillator for high accuracy of 0.05% reading plus 1 digit. The device offers dual measurement modes: contact mode with a range of 2 to 20,000 rpm and surface speed measurements up to 78,720 inches/min, and laser photo mode with a range of 2 to 99,999 rpm for non-contact measurements up to 1.6 ft (0.5 m) away. It includes data storage capability for 10 data sets with four parameters each (measurement, max, min, and average), making it ideal for monitoring flywheels, conveyors, pumps, elevators, motors, fans, and gears in industrial and maintenance applications.