1,Easy to use 2,Portable with Carry case 3,Digital Display Vibration Meter GM63B1,Easy to use ... 2,Portable with Carry case 3,Digital Display Acceleration0.1-199.m/S2 peak(rms*v2)Velosity 0 ... .1-1999.9mms rms Displacement 0.001-1.999mm p-p(rms*2v2) ... GM63B1 x English User Manual Free shipping GM63B Digital Vibration Sensor Meter Tester Vibrometer Analyzer Handheld Case ,MOQ ...