Travelling sundial

Sundial in the shape of a hemisphere engraved on the outside with a rosette of leaves and a border of leaf tendrils. The circular plate closing the hemisphere has 2 borders with engraved numerals and in the centre the inscription: EQVA:HORAR:LVN E IN HORAR:EQVALIUM. SOLIS. In the rotating part of the plate are 2 apertures indicating the date and the phase of the moon. Inside the hemisphere a movable gnomon and engraved numerals and the signs of the zodiac, including Septentrio, Oriens, Meridies, Occidens. The Rijksmuseum, Amsterdam, holds this object as BK-14426; its record gives material recorded as copper (metal); technique riveted, forging, cutting, gild, engraving; measurements diameter 6 cm x height 2.8 cm. Description translated from the museum's Dutch catalogue text; details are those of this museum object, and how far it represents a wider type has not been independently verified.