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This beautiful necklace features a conch shell in high polish finish on an 18" silver chain
this is an example of one of the first motion picture instruments
This item is based on his work
like those used by ancient sailors to place the brightest circumpolar stars and aid their nightly observations
Miniature Nautical Astrolabe - Key Ring Zoetrope This beautiful necklace features aMiniature 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