File:Calvert Holt K4 assistant.png

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The "K4" on test, Mr. Holt in tender. From "The Model Engineer and Practical Electrician", 20 October 1932.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:33, 28 May 2013		805 × 438 (279 KB)	Dnevil (talk \| contribs)	The "K4" on test, Mr. Holt in tender. From "The Model Engineer and Practical Electrician", 20 October 1932.

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