Diagram - Telegraph Instrument Connections, 1874 Document Reg. No: HT 16094

Diagram showing the method by which connections are made in telegraph instruments at both terminal and intermediate stations on the closed and open circuit systems. In each case the connections between the batteries, relay, register, key and lightning arrester are shown.

Published by the Chief Electric telegraph Office in 1874
Folding lithographed sheet- approximately A3 size.
Discipline: Technology
Dimensions: 282 mm (Width), 465 mm (Length)

More information

Tagged with: circuits, telegraphy
Themes this item is part of: Telegraphy Collection, Information & Communication Collection, Public Life & Institutions Collection
Primary Classification: COMMUNICATIONS
Secondary Classification: Telegraphy
Tertiary Classification: plans
Inscriptions: Text above diagram:
"DIAGRAM/Showing method by which connections are made in Instruments at both/Terminal and Intermediates Stations on the CLOSED and OPEN Circuit."

Text at lower right:
"Sands & MacDougall, lith, Melbourne"

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