telautograph

noun

tel·​au·​to·​graph

-raf,

-rȧf

plural telautographs

: a facsimile telegraph for reproducing graphic matter by means of a transmitter in which the motions of a pencil are communicated by levers to two rotary shafts that produce variations in current in two separate circuits and by means of a receiver in which these variations are utilized by electromagnetic devices and levers to move a pen as the pencil moves

—formerly a U.S. registered trademark

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