White plastic dead reckoning computer used for aerial navigation. The circular computer has three discs for ground speed, mileage and course.

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Size: 4711px × 3579px
Photo credit: © Heritage Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: air, art, aviation, brass, calculator, color, colour, computer, computing, concept, device, education, educational, flight, general, heritage, institution, instrument, instruments-computers, museum, nasm, national, navigation, navigational, object, plastic, purpose, scientific, smithsonian, space, speed, system, technology, weems