Laser Tachometer Contact and Noncontact Contact RPM Range 2 to 20 000 Noncontact RPM Range 2 to 99 999 Speed (FPM) 0 to 6560 Speed (M/Min) 0 to 2000 RPM Accuracy +/-0.05 Percent +1 Digit Speed Accuracy +/-0.05 Percent +1 Digit Working Distance 1.6 ft Light Source Laser Display Backlit LCD Memory 10 Data Sets Features Linear Surface Speed Includes 9V Battery Carrying Case Contact Wheel Instructions Reflective Tape