13878595

Wall Art and Photo Gifts from Mary Evans Picture Library

13878595

Mary Evans Picture Library makes available wonderful images created for people to enjoy over the centuries

Media ID 32329128

© Aviation Ancestry

VISUAL DESCRIPTION
This vintage advertisement showcases the Simmonds-Goudie Navigational Instruments, emphasizing their advanced yet simple design for aviators. The ad highlights a series of circular slide rules, each engraved in different languages including English, French, Danish/Norwegian, Dutch/Flemish, Polish and Czech/Slovakian—demonstrating the international reach and utility of these tools. These instruments were used by pilots to compute critical flight data such as airspeed and altitude corrections. Marketed towards both commercial airlines and military forces around the world during an era where navigation relied heavily on manual calculations rather than digital technology, this piece reflects a time when precision engineering was essential for safe air travel.

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