Sundial and compass with perpetual calendar and lunar circles. Brass, part silvered, 6 1/8 x 5 3/8-inches. By Christopher Kohler, Dresden, Germany, 1677. Glass of compass box cracked, compass needle ...

Primarily, the compass was used for geomancy for a long time before it ... in a simplified form. The inner circle had the eight trigrams and the outer circle the 24 directions (based on azimuth points ...