Visit us in Washington, DC and Chantilly, VA to explore hundreds of the world’s most significant objects in aviation and space history.
Learn how aviation and spaceflight transformed the world.
The lunar module represents one of humanity’s greatest achievements: landing people on another heavenly body.
Don’t miss our fast-paced webcasts designed to engage students in Science, Technology, Engineering, and Math in 30 minutes.
Experts answer your questions about aerospace.
Our scientists are involved in current research focused on the Martian climate and geology. Find out what we’re discovering.
Recognize your favorite air or space enthusiast. Add their name to the Museum’s Wall of Honor.
CCO - Creative Commons (CC0 1.0)
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IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu
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Sighting head, missing periscopic element.
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This object is on display in the Time and Navigation exhibition at the National Air and Space Museum in Washington, DC.
The B-3 was used on bombers and transports when ground or water could be clearly seen. It evolved from the earlier Gatty drift meters.
National Air and Space Museum Collection
National Air and Space Museum in Washington, DC
Time and Navigation
Gift of the City of Los Angeles
United States of America
aluminum, brass, copper, cork, glass mirror, lenses, paint, plastic
3-D (Without Eyepiece): 26.7 x 15.2 x 22.2cm (10 1/2 x 6 x 8 3/4 in.)
Other (With Eyepiece): 26.7cm (10 1/2 in.)
National Air and Space Museum
Thursday through Monday: 10:00 am to 5:30 pm
Daily: 10:00 am to 5:30 pm