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See Also
For a list of all these illustrations used in Wikipedia please see the article Hawkins Electric Guide on the English Wikipedia.
Licensing
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Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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== Summary == === Illustration Description === Figure 329-332 -- Various forms of brush * Fig 329 - gauze brush * Fig 330 - laminated or strip brush * Fig 331 - strip and wire brush as used on early Edison machines * Fig 332 - carbon brush Carbon is pre
File usage
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