TelAutograph, short-line telegraph used to communicate handwriting and sketches. At the transmitter the motion of the pen or stylus traces out the material to be transmitted, and this motion is converted into electrical signals that are transmitted to the receiver.

How did the telautograph work?

The telautograph was a precursor to the fax machine. It worked by transmitting electrical impulses recorded and sent to a receiving with a pen attached. Invented by Elisha Gray in 1888, the patent claimed that it would allow the transmission of one person's handwriting to a distant point over a two-wire circuit.

Which system is known as telautograph system?

The telautograph, an analog precursor to the modern fax machine, transmits electrical impulses recorded by potentiometers at the sending station to servomechanisms attached to a pen at the receiving station, thus reproducing at the receiving station a drawing or signature made by the sender.