EQUINOCTIAL SUNDIAL Octagonal brass sundial. The plate engraved with facing dolphins. The ring on a graduated hoop and the compass and the compass showing the four directions and compass rose in the centre. The reverse is signed L.Grassl for Lorenz Grassl (1740-1825). Augsburg, late 18th century. Size: 5 x 5 cm Accompanied by its original printed instructions for use with all the indications of inclinations and uses and its case (damaged). (damaged).