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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blanc Pethe Eparvier & Cie
Original Assignee
Blanc Pethe Eparvier & Cie
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.)
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
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Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
General Physics & Mathematics
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Radar, Positioning & Navigation
(AREA)
Remote Sensing
(AREA)
FR554034D1922-07-181922-07-18Système réflecteur pour le repérage de la bulle d'un niveau
ExpiredFR554034A
(fr)