Polar Curve French Curves
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A Polar Spiral French curve, or irregular curve, is used to draw engineering diagrams and steam curves, and is plotted by using the polar equation.
Keywords
Ruler, rulers, curve ruler, curved ruler, curve rulers, Polar Curve French Curves, Polar Curve Irregular Curve, polar curve ruler, polar equationGalleries
Mechanical Drawing ToolsSource
French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)
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