Contact And Non-Contact Tachometer, Range: Surface Speed (Contact): 1 - 9999.9 M/MINT, 3 - 30,000 FT-MINT, 1 - 10,000 YD-MINT, Resolution: RPM Unit: 0.001,0.01,0.1,1, M-MINT Unit: 0.0001,0.001,0.01,0.1, Ft-MINT Unit: 0.0001, 0.001, 0.01, 0.1: YD-MINT Unit: 0.0001, 0.001, 0.01, 0.1, Rpm Range: Rotati