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Title: Edison 3-core straight joint from the Pearl Street Installat [Go to resource]
Description: Edison 3-core straight joint from the Pearl Street Installation, with ball-and-socket joint for change of direction (1885) License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1951-441 Go to resource More Like this...-
Stethoscope;Ball-and-socket-joint monaural.…Stethoscope;Ball-and-socket-joint monaural. 19th - early…
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