Logarithmic Spiral Curve French Curves

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A Logarithmic Spiral French curve, or irregular curve, is used to draw short elliptical radius curves by using points. The log curve is approximately closely shaped to a cycloid and other mathematical curves.

Keywords

Ruler, rulers, curve ruler, curved ruler, curve rulers, Logarithmic Curve French Curves, Logarithmic Curve Irregular Curve, log curve ruler

Galleries

Mechanical Drawing Tools

Source

French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)

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