Tachometer Contact Noncontact Contact RPM Range 0.5 to 19 999 rpm Noncontact RPM Range 2.5 to 99 999 Speed (FPM) 0.16 to 6415 fpm Speed (M/Min) 0.05 to 1999.9 m/min Speed Accuracy +/-0.05 Percent + 1 dgt. RPM Resolution 0.1 to 1 RPM Light Source Laser Display 5 Digit LCD Memory Last/Min/Max