Drawing Ruler
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A straightedged strip, as of wood or metal, for drawing straight lines and measuring lengths.
Galleries
Mechanical Drawing ToolsSource
Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)
Downloads
2400×287, 106.9 KiB
1024×122, 17.3 KiB
640×76, 9.2 KiB
320×38, 3.8 KiB