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It may also be used for determining the time of day
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
Our lovely stereoscope comes complete with 16 photo cards and a booklet of instruction and historical context
Invented in 1877 by Frenchman Emile Reynaud to overcome the deficiencies of the Zoetrope
The nautical astrolabe is simplified to measure the altitude of the stars for purposes of navigation
Miniature Nautical Astrolabe - Desk Model Scientific It may also be usedMiniature 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. It's heavier construction from those used on land was to compensate for the movement
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