List Your Used Vibration Analyzer Or Other Items For Free ! The Used Vibration web site for vibration analysis analyzers offer for FREE listing of your used equipment to help you sell items such as vibration data collectors, FFT spectrum analyzer, vibration analyzer, machine balancing or laser alignment systems. This free service has no limitations other than letting Used Vibration know when an item is sold. What you need to do? Contact Us and send explicit details on the item, your asking price, photo’s and contact information.