Synchronizer definition

A device used in the editing room for assembling, logging, syncing, measuring footage and checking sync.  The device includes a center axle along with multiple sprocket wheels (called gangs) that are joined to it.  A foot of film is equivalent to one revolution of the synchronizer.  Film is clamped into the wheels to the film can be measured with a footage counter.  It is a very helpful device because multiple items can be efficiently cut to the same length.