Sextant with Digital Readout and Night Viewing Capability.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent describes a navigation instrument for measuring the altitude of celestial bodies above the horizon adaptable to use with ordinary iron sights, a standard telescope for daylight viewing, and an electronic image enhancing telescope for night viewing of the horizon. Digital readout of the altitude of the celestial bodies is available on the instrument as well as electrically telemetering this information to a remote site where it may be recorded along with the time of observation.