FR1016604A -
Improvements made in the establishment of topographers and geologists' compasses, as well as the resulting industrial product
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Improvements made in the establishment of topographers and geologists' compasses, as well as the resulting industrial product
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G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
G01C17/02—Magnetic compasses
G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
G01C17/10—Comparing observed direction with north indication
G01C17/12—Comparing observed direction with north indication by sighting means, e.g. for surveyors' compasses
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Engineering & Computer Science
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Radar, Positioning & Navigation
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Remote Sensing
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Physics & Mathematics
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General Physics & Mathematics
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FR1016604D1950-04-221950-04-22
Improvements made in the establishment of topographers and geologists' compasses, as well as the resulting industrial product
ExpiredFR1016604A
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