FR21592E - Magnetic compass - Google Patents

Magnetic compass

Info

Publication number
FR21592E
FR21592E FR21592A FR21592DA FR21592E FR 21592 E FR21592 E FR 21592E FR 21592 A FR21592 A FR 21592A FR 21592D A FR21592D A FR 21592DA FR 21592 E FR21592 E FR 21592E
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
FR21592A
Other languages
French (fr)
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 FR21592E publication Critical patent/FR21592E/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
    • G01C17/02—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)
FR21592A 1919-08-13 1919-08-13 Magnetic compass Expired FR21592E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR21592T 1919-08-13

Publications (1)

Publication Number Publication Date
FR21592E true FR21592E (en) 1920-11-15

Family

ID=8660601

Family Applications (1)

Application Number Title Priority Date Filing Date
FR21592A Expired FR21592E (en) 1919-08-13 1919-08-13 Magnetic compass

Country Status (1)

Country Link
FR (1) FR21592E (en)

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