The pointer telegraph is a communication system designed to send orders from the bridge or bridge annexes to the engine room or engine control room. Whenever a new command is being issued, the telegraph alarm will be switched on. In order to mute the alarm, the command must be acknowledged at the selected position by moving the control lever to the position requested. Precision potentiometers are used to transmit the orders. They are controlled by means of an operating lever equipped with either a knob or a cross lever. Servo motors are used for moving the pointers along the scales of the control units.

 The system can be switched from telegraph mode to Remote Control (R.C.) mode by means of a single contact. In R.C. mode, the telegraph alarm section is disabled. The wheelhouse unit’s reply pointer is now connected to it’s own command lever. The R.C. mode is used to control the main engine directly from the wheelhouse by means of optional R.C. transmitters. Other possible options are: