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Carl Zeiss AG
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Carl Zeiss AG
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Publication date
Application filed by Carl Zeiss AGfiledCriticalCarl Zeiss AG
Application grantedgrantedCritical
Publication of FR858321ApublicationCriticalpatent/FR858321A/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
G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
G01C9/26—Details
G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating means
Landscapes
Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
General Physics & Mathematics
(AREA)
Radar, Positioning & Navigation
(AREA)
Remote Sensing
(AREA)
FR858321D1938-08-021939-07-27Dispositif d'éclairage pour niveaux à boîte
ExpiredFR858321A
(fr)