Items tagged telegraphy in MV Collections
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Items per page: 10 50 (showing 111 - 120) 137 items
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Telegraph Relay - late 19th Century
Morse relay under glass dome. Used at Melbourne Observatory.
From: South Yarra, Australia Images: 2 -
Cable Sample - Submarine Telegraph, Shore End, Date Unknown
Section of the shore end of a submarine telegraph cable. The shore-end of a telegraph cable could extend several miles from land and was usually of more robust construction than the ma ...
Images: 1 -
Telegraph Key - Elliott, 1890s
Telegraph key used for the transmission of signals in the Morse electric telegraph system. Key was used at Melbourne Observatory. To transmit signals the operator depressed a pivoted m ...
From: London, United Kingdom Images: 1 -
Telegraph Switch - Wasserlein, late 19th Century
Telegraph switch used for making or breakiing connections in one or two telegraph circuits. By rotating the centrally pivoted lever connection could be made between either of two pairs ...
From: Berlin, Germany Images: 1 -
Telegraph Sounder - Wasserlein, late 19th Century
Telegraph sounder used for the reception of telegraph messages transmitted by Morse code. Telegraph signals were transmitted by an operator who depressd a key to complete an electric c ...
From: Berlin, Germany Images: 1 -
Telegraph Register - Siemens Brothers, Inking, Victorian Telegraph Service, circa 1860s
Telegraph inking register for receiving and recording telegraph signals. In operation, the intermittent current generated by the received signals causes a small rotating wheel to be in ...
From: Melbourne, Australia Images: 2 -
Cable Samples - Submarine Telegraph, Atlantic, Four Sections, 1865
Four sections of the Atlantic Submarine Telegraph cable laid in 1865. The length of the cable was about 2300 nautical miles. The four objects include two sections of the main cable an ...
From: London, United Kingdom Images: 7 -
Telegraph Multiplex System - Murray, circa 1920s
Telegraph Multiplex System in separate parts including printer, paper tape punch, control switch box, distributor motor, terminal block, Creed relay, vibrator, distributor, meters, pape ...
Images: 11 -
Telegraph Key & Relay - Victorian Telegraph Service, 1860s
Telegraph key and relay. The key was used for the transmission of signals in the Morse electric telegraph system. The relay was part of part of the circuit involved in receiving signals ...
From: Melbourne, Australia Images: 1 -
Cable Sample - Telegraph, Mainland, Date Unknown
This is a section of mainland telegraph cable. It consists of a conductor of 7 tinned copper wires, rubber insulated and lead covered, served and compounded, amoured with steel wires, ...
Images: 1
