The equiangular compass (Q1935362)

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.