FR849301A - Perfectionnements aux niveaux - Google Patents

Perfectionnements aux niveaux

Info

Publication number
FR849301A
FR849301A FR849301DA FR849301A FR 849301 A FR849301 A FR 849301A FR 849301D A FR849301D A FR 849301DA FR 849301 A FR849301 A FR 849301A
Authority
FR
France
Prior art keywords
levels
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
English (en)
Inventor
Montague Ernest Gadd
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 FR849301A publication Critical patent/FR849301A/fr
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
    • 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
    • G01C9/26—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)
FR849301D 1939-01-23 1939-01-23 Perfectionnements aux niveaux Expired FR849301A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR849301T 1939-01-23

Publications (1)

Publication Number Publication Date
FR849301A true FR849301A (fr) 1939-11-21

Family

ID=9314675

Family Applications (1)

Application Number Title Priority Date Filing Date
FR849301D Expired FR849301A (fr) 1939-01-23 1939-01-23 Perfectionnements aux niveaux

Country Status (1)

Country Link
FR (1) FR849301A (fr)

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