The equiangular compass
In the article, the authors introduce an instrument that unifies and extends the constructional powers of the compass and the straightedge, an instrument that they call the ``equiangular compass''. The ``equiangular compass'' is an instrument that is able to draw equiangular spirals. The authors show us the construction of the instrument. It can draw a logarithmic spiral about any given center, through any given point, with any given tangent at any point. Using the equiangular compass, the authors give procedures for drawing a straight line, a circle and two applications for classical problems.
scientific article; zbMATH DE number 6136591
scientific article