Belt Frequency Finder Tool by Carlisle Belts makes easy work of precisely measuring the frequency and tension of any drive belt. It can be used on any belt and comes with an LCD screen for easier operation.
This electronic instrument is used to precisely measure the static tension of any belt including v-belts, ribbed v-belts, and synchronous belts.
The Frequency-Finder works on the principle of forced vibration. The frequency of vibration is related to the tension of the belt i.e. the higher the frequency reading, the higher the belt tension.