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JAC VAN DEN BAN
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JAC VAN DEN BAN
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Publication of FR332405ApublicationCriticalpatent/FR332405A/fr
G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
G01C19/02—Rotary gyroscopes
G01C19/34—Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes
G01C19/38—Rotary gyroscopes for indicating a direction in the horizontal plane, e.g. directional gyroscopes with north-seeking action by other than magnetic means, e.g. gyrocompasses using earth's rotation
FR332405D1903-05-261903-05-26Dispositif pour indiquer les points cardinaux
ExpiredFR332405A
(fr)