Miniature Nautical Astrolabe - Key Ring Zoetrope Nautical astrolabe (used to find

Nautical astrolabe (used to find latitude measuring Sun and stars height)

It draws on the intimate association with the rotation of the moon

Also available in larger desk version

The dial is composed of a circular band perforated by two offsetting symmetrical holes through which the sun rays pass and are projected as a small elongated spot of light on the hourly line etched on the interior of the dial

Miniature Nautical Astrolabe - Key Ring Zoetrope Nautical astrolabe (used to findMiniature nautical astrolabe. Was used for calculating latitude using Suns altitude. Scale reduced. This instrument is a replica of the Nautical Astrolabe of the "Valance", which is placed in the Kensington Museum and belonged to the Army of Philipe II (16th century). The nautical astrolabe is simplified to measure the altitude of the stars for purposes of navigation. Its heavier construction from those used on land was to compensate for the movement