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AU8539975A - Compasses - Google Patents

Compasses

Info

Publication number
AU8539975A
AU8539975A AU85399/75A AU8539975A AU8539975A AU 8539975 A AU8539975 A AU 8539975A AU 85399/75 A AU85399/75 A AU 85399/75A AU 8539975 A AU8539975 A AU 8539975A AU 8539975 A AU8539975 A AU 8539975A
Authority
AU
Australia
Prior art keywords
compasses
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
AU85399/75A
Inventor
Louis Marcel Manotte
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.)
Direction General de lArmement DGA
Gouvernement de la Republique Francaise
Original Assignee
Delegation Ministerielle pour lArmement
Gouvernement de la Republique Francaise
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 Delegation Ministerielle pour lArmement, Gouvernement de la Republique Francaise filed Critical Delegation Ministerielle pour lArmement
Publication of AU8539975A publication Critical patent/AU8539975A/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
    • G01C17/26—Observing the compass card or needle using electric pick-offs for transmission to final indicator, e.g. photocell

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
AU85399/75A 1974-10-11 1975-10-02 Compasses Expired AU8539975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7434195A FR2287681A1 (en) 1974-10-11 1974-10-11 DIGITAL MAGNETIC COMPASS

Publications (1)

Publication Number Publication Date
AU8539975A true AU8539975A (en) 1977-04-07

Family

ID=9143968

Family Applications (1)

Application Number Title Priority Date Filing Date
AU85399/75A Expired AU8539975A (en) 1974-10-11 1975-10-02 Compasses

Country Status (4)

Country Link
AU (1) AU8539975A (en)
DE (1) DE2536140A1 (en)
FR (1) FR2287681A1 (en)
SE (1) SE7508624L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160692B (en) * 1984-05-04 1987-11-11 Canon Kk Lcd matrix elements
EP0434884A1 (en) * 1989-12-29 1991-07-03 Detra Sa Direction indicating device
US5526022A (en) 1993-01-06 1996-06-11 Virtual I/O, Inc. Sourceless orientation sensor
US5991085A (en) 1995-04-21 1999-11-23 I-O Display Systems Llc Head-mounted personal visual display apparatus with image generator and holder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2201559A (en) * 1937-05-12 1940-05-21 Sperry Gyroscope Co Inc Earth induction compass
US3634946A (en) * 1969-02-10 1972-01-18 Lundy Electronics & Syst Inc Digital compass
FR2146554A5 (en) * 1971-07-19 1973-03-02 France Etat

Also Published As

Publication number Publication date
SE7508624L (en) 1976-04-12
DE2536140A1 (en) 1976-04-22
FR2287681A1 (en) 1976-05-07
FR2287681B1 (en) 1977-03-18

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