Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Application grantedgrantedCritical
Publication of FR545308ApublicationCriticalpatent/FR545308A/fr
G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
G01C9/00—Measuring inclination, e.g. by clinometers, by levels
G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
G01C9/20—Measuring inclination, e.g. by clinometers, by levels by using liquids the indication being based on the inclination of the surface of a liquid relative to its container
Landscapes
Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
General Physics & Mathematics
(AREA)
Radar, Positioning & Navigation
(AREA)
Remote Sensing
(AREA)
FR545308D1918-04-111918-04-11Indicateur de niveau pouvant être adapté aux aéroplanes, dirigeables, ou appareils similaires
ExpiredFR545308A
(fr)