Grumann Astroguide made of cardboard, dating from October 19 - Lot 363

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Lot n° 363
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Estimation :
150 - 200 EUR
Grumann Astroguide made of cardboard, dating from October 19 - Lot 363
Grumann Astroguide made of cardboard, dating from October 1961. Features a pull tab and two rotating discs (for the North Pole and the South Pole). Explanatory text on the back. 25 x 19 cm. The Astroguide is a geostellar projection system designed to be used as a slide rule. It was designed and developed by Grumman primarily as an emergency navigation aid for manned spacecraft in low Earth orbit, but can also be used to identify stars from a known location on the Earth’s surface. ITEM: ASTROGUIDE
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