FR547547A - Compass refinements - Google Patents

Compass refinements

Info

Publication number
FR547547A
FR547547A FR547547DA FR547547A FR 547547 A FR547547 A FR 547547A FR 547547D A FR547547D A FR 547547DA FR 547547 A FR547547 A FR 547547A
Authority
FR
France
Prior art keywords
refinements
compass
compass refinements
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
Burghard Weiss
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 FR547547A publication Critical patent/FR547547A/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
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR547547D 1921-06-10 1921-06-10 Compass refinements Expired FR547547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR547547T 1921-06-10

Publications (1)

Publication Number Publication Date
FR547547A true FR547547A (en) 1922-12-18

Family

ID=8934299

Family Applications (1)

Application Number Title Priority Date Filing Date
FR547547D Expired FR547547A (en) 1921-06-10 1921-06-10 Compass refinements

Country Status (1)

Country Link
FR (1) FR547547A (en)

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