FR773222A -
Method and instrument for determining the direction of a horizontal passing through a point on board a ship, and having a known height above sea level
- Google Patents
Method and instrument for determining the direction of a horizontal passing through a point on board a ship, and having a known height above sea level
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Carl Zeiss AG
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Carl Zeiss AG
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Application grantedgrantedCritical
Publication of FR773222ApublicationCriticalpatent/FR773222A/en
G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C3/00—Measuring distances in line of sight; Optical rangefinders
G01C3/02—Details
G01C3/04—Adaptation of rangefinders for combination with telescopes or binoculars
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Physics & Mathematics
(AREA)
Electromagnetism
(AREA)
Engineering & Computer Science
(AREA)
General Physics & Mathematics
(AREA)
Radar, Positioning & Navigation
(AREA)
Remote Sensing
(AREA)
FR773222D1933-05-161934-05-12
Method and instrument for determining the direction of a horizontal passing through a point on board a ship, and having a known height above sea level
ExpiredFR773222A
(en)
Method and device for obtaining from the same headlight either intensive white lighting or tinted lighting avoiding dazzling caused by automobile or other headlights