<Spiral of Archimedes> tab 

For constructing the contour of an Archimedes spiral press <Profile by function> button and in opened window choose the the <Spiral of Archimedes> tab.
To create an Archimedes spiral it is necessary to define its <Central>, <Starting> and <Finishing> points. <Deviation from ideal contour> means the distance between the points of the theoretical curve and the corresponding points of the constructed spiral. Having defined the parameters, press the <Ok> button to build the Archimedes spiral. Below you can see example of a contour constructing.
See also: 
