FR539589A - Luminous rose for compass or compass - Google Patents

Luminous rose for compass or compass

Info

Publication number
FR539589A
FR539589A FR539589DA FR539589A FR 539589 A FR539589 A FR 539589A FR 539589D A FR539589D A FR 539589DA FR 539589 A FR539589 A FR 539589A
Authority
FR
France
Prior art keywords
compass
rose
luminous
luminous rose
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
Abel-Louis Doignon
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 FR539589A publication Critical patent/FR539589A/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
    • G01C17/20—Observing the compass card or needle
    • G01C17/24—Illumination

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR539589D 1921-08-23 1921-08-23 Luminous rose for compass or compass Expired FR539589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR539589T 1921-08-23

Publications (1)

Publication Number Publication Date
FR539589A true FR539589A (en) 1922-06-28

Family

ID=8928950

Family Applications (1)

Application Number Title Priority Date Filing Date
FR539589D Expired FR539589A (en) 1921-08-23 1921-08-23 Luminous rose for compass or compass

Country Status (1)

Country Link
FR (1) FR539589A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600644A (en) * 1946-01-16 1952-06-17 John L H Hand Illuminated dial

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2600644A (en) * 1946-01-16 1952-06-17 John L H Hand Illuminated dial

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