The Spiral Of Archimedesfablabchemnitz.de.archimedesspiral
R = r + aθ
50
3
50
0
5
Notes
The option "turns" only works if you set "length (mm)" to 0.0.
Otherwise the length value will be used to calculate the
spiral for given length. The higher the "step" value is
set the better the accuracy is. If you set the step value
really low the resulting length will not be precise and
the curve is maybe not drawn at all. You can validate the
length by using the extension "Visualize Path> Measure Path"
all