GB1441265A - Audio compass - Google Patents

Audio compass

Info

Publication number
GB1441265A
GB1441265A GB312473A GB312473A GB1441265A GB 1441265 A GB1441265 A GB 1441265A GB 312473 A GB312473 A GB 312473A GB 312473 A GB312473 A GB 312473A GB 1441265 A GB1441265 A GB 1441265A
Authority
GB
United Kingdom
Prior art keywords
audio compass
compass
audio
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
GB312473A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB312473A priority Critical patent/GB1441265A/en
Publication of GB1441265A publication Critical patent/GB1441265A/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)
GB312473A 1973-01-22 1973-01-22 Audio compass Expired GB1441265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB312473A GB1441265A (en) 1973-01-22 1973-01-22 Audio compass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB312473A GB1441265A (en) 1973-01-22 1973-01-22 Audio compass

Publications (1)

Publication Number Publication Date
GB1441265A true GB1441265A (en) 1976-06-30

Family

ID=9752374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB312473A Expired GB1441265A (en) 1973-01-22 1973-01-22 Audio compass

Country Status (1)

Country Link
GB (1) GB1441265A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452084A1 (en) * 1979-03-21 1980-10-17 Decis Mario Automatic steering for pleasure boat - uses magnetic compass with opto-electronic detectors sensing difference from magnetic north

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452084A1 (en) * 1979-03-21 1980-10-17 Decis Mario Automatic steering for pleasure boat - uses magnetic compass with opto-electronic detectors sensing difference from magnetic north

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee