FR887779A - Improvement in magnetic compasses compensation of quadrantal deviation - Google Patents

Improvement in magnetic compasses compensation of quadrantal deviation

Info

Publication number
FR887779A
FR887779A FR887779DA FR887779A FR 887779 A FR887779 A FR 887779A FR 887779D A FR887779D A FR 887779DA FR 887779 A FR887779 A FR 887779A
Authority
FR
France
Prior art keywords
compensation
improvement
magnetic compasses
quadrantal deviation
quadrantal
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
Charles-Leon-Frederi Hemard
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 FR887779A publication Critical patent/FR887779A/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
    • G01C17/38—Testing, calibrating, or compensating of compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR887779D 1941-09-22 1941-09-22 Improvement in magnetic compasses compensation of quadrantal deviation Expired FR887779A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR887779T 1941-09-22

Publications (1)

Publication Number Publication Date
FR887779A true FR887779A (en) 1943-11-23

Family

ID=9376320

Family Applications (1)

Application Number Title Priority Date Filing Date
FR887779D Expired FR887779A (en) 1941-09-22 1941-09-22 Improvement in magnetic compasses compensation of quadrantal deviation

Country Status (1)

Country Link
FR (1) FR887779A (en)

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