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Title: Revolution Counter by Elliott No. 8454 (glass cracked) [Go to resource]
Description: Revolution Counter by Elliott No. 8454 (glass cracked) License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Creator: Elliott Brothers (London) Ltd. Identifier: 1927-370 Go to resource More Like this...-
Portable laboratory wattmeter, electrodynamometer…Portable laboratory wattmeter, electrodynamometer type…
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