File:Electrical Machinery 1917 - knife switch.jpg

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Description

Fig. 103 Knife switch


See other images from this source in 'Electrical Machinery'
Date
Source Croft, Terrell (1917) Electrical Machinery, McGraw-Hill, pp. p117
Author Terrell Croft (orginal book author)
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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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current16:02, 7 January 2013Thumbnail for version as of 16:02, 7 January 2013401 × 743 (163 KB)wikimediacommons>ScottCrop.

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