FR491329A - Boussole magnétique - Google Patents

Boussole magnétique

Info

Publication number
FR491329A
FR491329A FR491329DA FR491329A FR 491329 A FR491329 A FR 491329A FR 491329D A FR491329D A FR 491329DA FR 491329 A FR491329 A FR 491329A
Authority
FR
France
Prior art keywords
magnetic compass
compass
magnetic
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
Alain-Victor-Francis Marion
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.)
ALAIN-VICTOR-FRANCIS MARION
Original Assignee
ALAIN-VICTOR-FRANCIS MARION
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 by ALAIN-VICTOR-FRANCIS MARION filed Critical ALAIN-VICTOR-FRANCIS MARION
Application granted granted Critical
Publication of FR491329A publication Critical patent/FR491329A/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
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/04—Magnetic compasses with north-seeking magnetic elements, e.g. needles
    • G01C17/10—Comparing observed direction with north indication
    • G01C17/12—Comparing observed direction with north indication by sighting means, e.g. for surveyors' compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR491329D 1917-08-20 1917-08-20 Boussole magnétique Expired FR491329A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR491329T 1917-08-20

Publications (1)

Publication Number Publication Date
FR491329A true FR491329A (fr) 1919-05-30

Family

ID=1527345

Family Applications (1)

Application Number Title Priority Date Filing Date
FR491329D Expired FR491329A (fr) 1917-08-20 1917-08-20 Boussole magnétique

Country Status (1)

Country Link
FR (1) FR491329A (fr)

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