Laser Tachometer Lutron DT-2234BL Made in Taiwan Measurement & Ranges : 10 to 100,000 RPM Resolution 0.1 RPM for the measured value < 1000 RPM. 1 RPM ( 1,000 RPM ) Accuracy : +/- 0.05% + 1 digit Detection distance : 50 mm to 2,000 mm * Laser light detecting source, long measuring range up to 2 meters, it is useful in the RPM measurement application where the machine would be a risk to the operator or close access is difficult or not possible. * Microprocessor based circuit, crystal time base, high precision with 0.05% accuracy. * High visible LCD display gives RPM reading exactly with no guessing or errors & saves battery energy. * Memory with recall function, the last value, max., value, min. value will be stored into the memory automatically. Accessories included : Carrying Case 1 PC Opeartion manual 1 pc Reflective Tape ( 600 mm ) 1 PC