Circle divider and circle distance gauge for craft and in schools

摘要

The circle distant gauge uses centre point of circle, which is already known or is determined with the help of angle integrated with the gauge used as a prism. The gauge is applied at the circle centre point. The inner scale can be rotated to adjust the gauge and to read off the resulting value e.g. dividing the circle in seven equal parts. A truncated cone can be quickly developed and the relevant values produced.