Multimedia Gallery
- Navigation Methods: Celestial Navigation
NEED CAPTION
Made by Jesse Ramsden in 1775, this machine permitted the automatic and highly accurate division of a circle into fractions of degrees of arc. The machine led to mass production of precision octants and sextants.
Dolphins (Lagenorhnychus lateralis, Delphinus borealis)
An astrodome on a Douglas C-47, circa 1944.
A navigator making sightings from the nose of a U.S. Navy Douglas PD-1.
Developed navigation equipment
This illustration from 1766 depicts the improved escapement in Le Roy’s marine clock.
This 1938 mechanical computer was a remarkable attempt to automate complex navigational processes.
This 1938 mechanical computer was a remarkable attempt to automate complex navigational processes.
Ferdinand Berthoud, a Swiss clockmaker serving the king of France, produced many marine clocks.
