The existing templates for drawing circles and ellipses are designed to draw only a selected intermittent set of sizes. Other conic sections, such as hyperbolas and parabolas, may be drawn using the French irregular curve templates. These drawing procedures are therefore, less accurate, inefficient and slow.

The Conic sections Compass (CSC) is a drawing instrument with which conic sections of continuously varying dimensions could be drawn with adequate accuracy and efficiency is specially designed and manufactured. Depending on the size range the whole set may be contained in box sizes similar to those of the ordinary drawing instruments. The compass is composed of three parts: an Axis, a Support for this axis and a Pen. It is expected that with these simple designs and few components made by a less sophisticated production method, the total cost would be affordable.

For more information please refer to this description document.

Here is a demo of the Conic Sections Compass in Action: