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FR746781A - Dual air bubble and ball level - Google Patents

Dual air bubble and ball level

Info

Publication number
FR746781A
FR746781A FR746781DA FR746781A FR 746781 A FR746781 A FR 746781A FR 746781D A FR746781D A FR 746781DA FR 746781 A FR746781 A FR 746781A
Authority
FR
France
Prior art keywords
air bubble
dual air
ball level
ball
level
Prior art date
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Jean-Louis Caillot
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 filed filed Critical
Application granted granted Critical
Publication of FR746781A publication Critical patent/FR746781A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • 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
    • G01C9/34—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 of the tubular type, i.e. for indicating the level in one direction only

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR746781D 1932-02-26 1932-02-26 Dual air bubble and ball level Expired FR746781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR746781T 1932-02-26

Publications (1)

Publication Number Publication Date
FR746781A true FR746781A (en) 1933-06-06

Family

ID=9147540

Family Applications (1)

Application Number Title Priority Date Filing Date
FR746781D Expired FR746781A (en) 1932-02-26 1932-02-26 Dual air bubble and ball level

Country Status (1)

Country Link
FR (1) FR746781A (en)

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