Standard Pack = 1 piece(s). Type = Tachometer ; Contact / Noncontact = Contact ; Contact RPM Range = 1 To 25,000 RPM ; RPM Accuracy = +/-0.4% ; Display = 5 Digit LCD ; Features = Measures Total Revolutions, Revolutions Per Minute, Surface Speed, Length ; Memory = Last/Min/Max ; Calibration Certificate = NIST ; Includes = Plastic Carrying Case, Batteries, Cone Adapter, Funnel Adapter, 6 Inch Measuring Wheel ;