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FR853412A - Averaging device particularly intended for sextants and other observation or sighting instruments - Google Patents

Averaging device particularly intended for sextants and other observation or sighting instruments

Info

Publication number
FR853412A
FR853412A FR853412DA FR853412A FR 853412 A FR853412 A FR 853412A FR 853412D A FR853412D A FR 853412DA FR 853412 A FR853412 A FR 853412A
Authority
FR
France
Prior art keywords
sextants
observation
particularly intended
device particularly
averaging device
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)
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.)
H MORIN ETS
Original Assignee
H MORIN ETS
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 H MORIN ETS filed Critical H MORIN ETS
Application granted granted Critical
Publication of FR853412A publication Critical patent/FR853412A/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
    • G01C1/00—Measuring angles
    • G01C1/08—Sextants
    • G01C1/10—Sextants including an artificial horizon

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR853412D 1938-11-07 1938-11-07 Averaging device particularly intended for sextants and other observation or sighting instruments Expired FR853412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR853412T 1938-11-07

Publications (1)

Publication Number Publication Date
FR853412A true FR853412A (en) 1940-03-19

Family

ID=9327078

Family Applications (1)

Application Number Title Priority Date Filing Date
FR853412D Expired FR853412A (en) 1938-11-07 1938-11-07 Averaging device particularly intended for sextants and other observation or sighting instruments

Country Status (1)

Country Link
FR (1) FR853412A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456392A (en) * 1945-01-31 1948-12-14 Fairchild Camera Instr Co Sextant marking device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456392A (en) * 1945-01-31 1948-12-14 Fairchild Camera Instr Co Sextant marking device

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