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Publication of FR692688ApublicationCriticalpatent/FR692688A/fr
G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
G01C5/005—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels altimeters for aircraft
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FR692688D1929-01-151930-01-14Perfectionnements apportés aux altimètres, notamment à ceux pour aéronefs
ExpiredFR692688A
(fr)