FR907490A - Earth induction compass - Google Patents

Earth induction compass

Info

Publication number
FR907490A
FR907490A FR907490DA FR907490A FR 907490 A FR907490 A FR 907490A FR 907490D A FR907490D A FR 907490DA FR 907490 A FR907490 A FR 907490A
Authority
FR
France
Prior art keywords
earth induction
induction compass
compass
earth
induction
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
Karl Barner
Hildebrand Heckmann
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Application granted granted Critical
Publication of FR907490A publication Critical patent/FR907490A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/022—Determining slope or direction of the borehole, e.g. using geomagnetism
    • 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
    • G01C17/28—Electromagnetic compasses
    • G01C17/30—Earth-inductor compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
FR907490D 1941-05-06 1943-07-20 Earth induction compass Expired FR907490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE907490X 1941-05-06

Publications (1)

Publication Number Publication Date
FR907490A true FR907490A (en) 1946-03-13

Family

ID=6862968

Family Applications (1)

Application Number Title Priority Date Filing Date
FR907490D Expired FR907490A (en) 1941-05-06 1943-07-20 Earth induction compass

Country Status (1)

Country Link
FR (1) FR907490A (en)

Similar Documents

Publication Publication Date Title
FR950700A (en) Attached
FR907490A (en) Earth induction compass
FR865047A (en) Induction compass
FR882811A (en) Induction compass
FR874253A (en) New watch casing
FR950913A (en) Magnetic repeater or compass
FR886979A (en) Compass based on the action of the earth's magnetic field
FI20894A (en) Induction compass
FR978441A (en) Gyromagnetic compass
FR887580A (en) Induction furnace
FR898888A (en) Altitude inhaler or regulator
FR884137A (en) Acceleration indicator
FR911150A (en) Pocket compass
DK63568C (en) Induction compass.
FR866943A (en) Gyroscopic instrument
AT186962B (en) Gyro crusher
FR840639A (en) Compass
CA391331A (en) Ellipse or circle compass
FR888290A (en) House
FR1018649A (en) Induction compass
CA397000A (en) Well surveying instrument
FR875812A (en) Regulator
FR862603A (en) Magnetic induction compass
ES153672A1 (en) A GIROMAGNETIC COMPASS
ES7060Y (en) Compass with alidade.