Engineer's Scale Ruler
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An Engineer’s Scale ruler for plotting and map drawing.
Keywords
Ruler, rulers, triangle ruler, Engineer's Scale Ruler, engineering ruler, engineers ruler, engineers scaleGalleries
Mechanical Drawing ToolsSource
French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)
Downloads
2400×352, 219.2 KiB
1024×150, 34.4 KiB
640×93, 16.8 KiB
320×46, 6.0 KiB