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Title: Bevan's patent 1908 Locknut, (single roller type, for 1" dia [Go to resource]
Description: Bevan's patent 1908 Locknut, (single roller type, for 1" diam. bolt) in two halves, with its 1 roller and 3 springs shown separately License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1909-126 Go to resource More Like this...
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