Unger by Sword. Astrolabe. Circa 1980 N 89 Decorative clock inspired by the astrolabe of Strasbourg. Glazed on 5 faces, gilded brass cage. Hours, minutes in the upper part and astrolabe dial in the lower part. Quartz movement (battery not checked). It indicates the local mean time, sidereal time, the sunrise and sunset of the place, the end and duration of the civil twilight over the year and the seasons. It also shows the sign of the zodiac occupied by the stars. Height: 30 cm