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Miniature astronomical ring dial
The compass is crafted of a wooden base with brass lid
But in 1838 Sir Charles Wheatstone addressed the Royal Society in London to present several pairs of line drawings with geometrical form which when viewed by an instrument very similar to this gave the impression of three dimensions
Nautical astrolabe (used to find latitude measuring Sun and stars height)
Complete with 20 animated strips
Gunter's Quadrant Calendar Miniature astronomical ring dialLocal Solar Quadrant with Nocturnal dial on the back. Made after two English originals of Gunter type quadrants of 18th century, which are on display at the Greenwich Maritime Museum. On the front, the instrument presents a local height quadrant furnished with a pinule system for establishing the sun's height. On the backside, there is a nocturnal, like those used by ancient sailors to place the brightest circumpolar stars and aid their nightly