Tachometer, Contact, Contact RPM Range 1 to 25,000, RPM Accuracy +/-0.4 Percent, Display 5 Digit LCD, Memory Last/Min/Max, Features Length, Measures Total Revolutions, Revolutions Per Minute, Surface Speed, Calibration Certificate NIST, Includes 6 in Measuring Wheel, Batteries, Cone Adapter, Funnel Adapter, Plastic Carrying Case