The RPM10 is a combined tachometer that measures both touch and non-contact RPM, making it usable in almost all situations. The RPM10 also has an infrared thermometer with laser pointer for measuring surface temperature ranging from -4 to 600 degrees Fahrenheit (-20 to 315 degrees Celsius), making it perfect for assessing the operating temperature of motors, bearings, and machinery. Wheels for measuring linear surface speed (0.2 to 6560 ft/min; 0.05 to 1999.9 m/min) or RPM, 4 AA batteries, 23 in. (0.6 m) reflective tape, carrying bag, and user manual are included.