(historical) An analogue precursor to the fax machine, transmitting electrical impulses recorded by potentiometers to servomechanisms attached to a pen at the receiving station, thus reproducing a drawing or signature made by the sender.
Transmission of messages by telautograph.
A facsimile telegraph for reproducing writing, pictures, maps, etc. In the transmitter the motions of the pencil are communicated by levers to two rotary shafts, by which variations in current are produced in two separate circuits. In the receiver these variations are utilized by electromagnetic devices and levers to move a pen as the pencil moves.
The telautograph is an analog precursor to the modern fax machine. It 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.