Image: Support-knob
Size of this preview: 800 × 599 pixels. Other resolutions: 320 × 239 pixels | 2,288 × 1,712 pixels.
Original image (2,288 × 1,712 pixels, file size: 548 KB, MIME type: image/jpeg)
Description: An example of early knob and tube wiring. One function of a knob was to prevent long runs of wire from sagging. Typically one short, unconnected piece of wire was used to tie the live wire to the knob.
Title: Support-knob
Credit: Own work
Author: me
Permission: CC-BY-SA-2.5
Usage Terms: Creative Commons Attribution-Share Alike 2.5
License: CC BY-SA 2.5
License Link: http://creativecommons.org/licenses/by-sa/2.5
Attribution Required?: Yes
Image usage
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