File:Tubes-no-knobs.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	02:47, 6 June 2006		2,255 × 759 (191 KB)	commons>Blahedo	{{Information \|Description=An example of early knob and tube wiring. The function of a ceramic tube was to carry wire through wood joists, protecting the wire from rubbing the wood or being compressed by it. \|Source=me \|Date=5 June 2006 \|Author=me \|Permi

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