The RPM33 provides both contact (2 to 19999 rpm) and non-contact (2 to 99999 rpm) RPM measurements for enhanced versatility. Laser guided non-contact RPM measurements taken up to 1.6 ft (500 mm) away for added safety. Readings are displayed on the large 5 digit backlit LCD. Store/recall 10 data sets in memory with 4 parameters (measurement, max, min and average). Comes with contact wheel for linear surface speed (0.2 to 6560 ft/min, 0 to 1999.9 m/min) or RPM measurements, 9 V battery, reflective tape, carrying case and user manual.