FR980243A - Improvement in the compensation of magnetic compasses - Google Patents

Improvement in the compensation of magnetic compasses

Info

Publication number
FR980243A
FR980243A FR980243DA FR980243A FR 980243 A FR980243 A FR 980243A FR 980243D A FR980243D A FR 980243DA FR 980243 A FR980243 A FR 980243A
Authority
FR
France
Prior art keywords
compensation
improvement
magnetic compasses
compasses
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
French (fr)
Inventor
Francois-Baptistin Bellon
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 FR980243A publication Critical patent/FR980243A/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)
FR980243D 1942-05-06 1942-05-06 Improvement in the compensation of magnetic compasses Expired FR980243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR980243T 1942-05-06

Publications (1)

Publication Number Publication Date
FR980243A true FR980243A (en) 1951-05-09

Family

ID=9523475

Family Applications (1)

Application Number Title Priority Date Filing Date
FR980243D Expired FR980243A (en) 1942-05-06 1942-05-06 Improvement in the compensation of magnetic compasses

Country Status (1)

Country Link
FR (1) FR980243A (en)

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