Summary
Mirror galvanometer used for receiving telegraph signals transmitted through submarine cables.
Such signals were too weak and distorted to drive conventional telegraph receiving equipment. The mirror galvanometer was very sensitive. It indicated the arrival of signal current by rotating a small mirror which deflected a beam of light across a screen for interpretation by the operator.
Made by Elliott Brothers of London, about 1900.
Physical Description
Circular wooden base with central wooden column supporting horizontal brass cylinder with ebonite (?) end plates. Vertical brass rod above cylinder, supporting curved magnet. Brass and steel components. Four brass terminals on wooden base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Victoria: Public Works Department (PWD), 11 Feb 1916
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Maker
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Inscriptions
Label on wooden base: "ELLIOTT BROS 449 STRAND LONDON" One end plate of horizontal cylinder engraved: "No. 254"
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Brand Names
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
228 mm (Length), 228 mm (Width), 494 mm (Height), 228 mm (Outside Diameter)
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References
[Catalogue] 1895. Elliott Brothers (London) Catalogue., E4, 1895, 11 Pages
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Keywords
Electric Apparatus & Instruments, Electrical Equipment, Galvanometers, Telegraphy
