FR2485721B1 - - Google Patents

Info

Publication number
FR2485721B1
FR2485721B1 FR8112991A FR8112991A FR2485721B1 FR 2485721 B1 FR2485721 B1 FR 2485721B1 FR 8112991 A FR8112991 A FR 8112991A FR 8112991 A FR8112991 A FR 8112991A FR 2485721 B1 FR2485721 B1 FR 2485721B1
Authority
FR
France
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
FR8112991A
Other languages
French (fr)
Other versions
FR2485721A1 (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.)
INSTRUMENTVERKEN AB
INSTRUMENT VERKEN AB
Original Assignee
INSTRUMENTVERKEN AB
INSTRUMENT VERKEN AB
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 INSTRUMENTVERKEN AB, INSTRUMENT VERKEN AB filed Critical INSTRUMENTVERKEN AB
Publication of FR2485721A1 publication Critical patent/FR2485721A1/fr
Application granted granted Critical
Publication of FR2485721B1 publication Critical patent/FR2485721B1/fr
Granted 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
    • 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
    • G01C17/14—Comparing observed direction with north indication by reference marks, e.g. for ships' compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Lenses (AREA)
FR8112991A 1980-06-26 1981-06-25 Agencement dans un compas de navigation Granted FR2485721A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8004749A SE420127B (sv) 1980-06-26 1980-06-26 Anordning vid kompasser

Publications (2)

Publication Number Publication Date
FR2485721A1 FR2485721A1 (fr) 1981-12-31
FR2485721B1 true FR2485721B1 (OSRAM) 1984-05-11

Family

ID=20341304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8112991A Granted FR2485721A1 (fr) 1980-06-26 1981-06-25 Agencement dans un compas de navigation

Country Status (3)

Country Link
FI (1) FI71196C (OSRAM)
FR (1) FR2485721A1 (OSRAM)
SE (1) SE420127B (OSRAM)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE438553B (sv) * 1983-09-09 1985-04-22 Instrument Verken Ab Anordning for att forhindra felvisning av en kompass

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB551165A (en) * 1941-08-06 1943-02-10 Harold Clifford Prins Improved navigational instrument
GB1095966A (en) * 1965-11-04 1967-12-20 Eastern Co Magnetic compass

Also Published As

Publication number Publication date
FI71196B (fi) 1986-08-14
FI71196C (fi) 1986-11-24
FI811779L (fi) 1981-12-27
FR2485721A1 (fr) 1981-12-31
SE420127B (sv) 1981-09-14

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Legal Events

Date Code Title Description
ST Notification of lapse