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- Topic: Navigation Tools
Displaying 81 - 90 of 186
Artifact
The periscopic sextant eliminated the need for astrodomes.
Photograph
Trained by P. V. H Weems in air navigation
Artifact
The Link A-12 Sextant represented a new generation of “averaging” sextants.
Photograph
This Lockheed RC-121D featured periscopic sextant ports for celestial sightings, eliminating the need for astrodomes.
Photograph
Advances in computing made celestial navigation practical for the Mach 3+ SR-71.
Artifact
The Lindbergh Hour Angle Watch eliminated a simple but troublesome calculation in celestial computations.
Document
These watches were often more popular for their use as fashion accessories than their practical application as navigational tools.
Artifact
Uses sidereal (star time), with a day of 23 hours, 56 minutes, 4.1 seconds long.
Artifact
For use with radio time signals.
