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 ... original retail packing1 x Vibration Meter GM63B1 x English User Manual GM63B Digital Vibrometer, vibrometer tester,Vibration Meter 0.1-199.m/S2 ...