sincronizzatori
Sincronizzatori, often referred to as synchronizers or synchros, are electromechanical devices used primarily in aviation and marine applications to indicate the rotational speed of an engine or other machinery relative to a reference speed. They typically consist of a transmitter and a receiver. The transmitter is coupled to the engine whose speed is being monitored, and it generates an electrical signal that varies in proportion to the engine's speed. This signal is then sent to the receiver, which is usually located on the instrument panel. The receiver, which is connected to a stable reference signal (often from a master oscillator or another engine in a multi-engine aircraft), interprets the incoming signal from the transmitter and displays the speed difference.
The primary function of a sincronizzatore is to help pilots or engineers maintain the desired speed relationship