Mount it to a multicopter, it will record the vibration curve during flying.
You can view the vibration chart on your PC, also using the software provided for this device, you can even overlay the vibration chart on the flight video (like OSD function).
Vibration Detector (Vibration logger)
Dimension: 36 x 25 x 11mm
Weight: 8g
Sampling frequency: 500Hz
Amplitude range: -2g to +2g
Frequency range: 1 to 200Hz
Max record time: 180 sec
Input voltage: 5-6V
Includes:
1 x Vibration Detector
1 x servo wire
1 x USB adapter