Helix Spiral Small 320×215 Medium 640×430 Large 1024×688 Download Tiff Original 2400×1613 | (304.5 KB) Description A helix spiral generated by revolving about an axis at an angle less than 90 degrees. This generates a cylindrical or coned shape as the tip meets. Keywords Drawing Helix Spiral, Helix Spiral, spiral, spirals Galleries Spirals Source: Anthony, Gardner C. Elements of Mechanical Drawing (Boston, MA: D. C. Heath & Co., 1904)
