Last October the*Wichita Eagle profiled*Ken Gebhart, the 79-year-old owner of
Celestaire, a local company that sells navigation equipment, including sextants. The sextants are Chinese imports; Celestaire itself makes the navigation tables and almanacs that accompany sextant use.*You might have thought that sextants had*gone the way of horses and buggies, but apparently the U.S. Navy is reviving*celestial navigation training, as a fallback in the event of a GPS failure.*[
via]
أكثر...
