FR813385A - Measuring or control device - Google Patents

Measuring or control device

Info

Publication number
FR813385A
FR813385A FR813385DA FR813385A FR 813385 A FR813385 A FR 813385A FR 813385D A FR813385D A FR 813385DA FR 813385 A FR813385 A FR 813385A
Authority
FR
France
Prior art keywords
measuring
control device
control
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
Yrjo Karki
Martti Vahermo
Evert Verner Aro
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 filed Critical
Application granted granted Critical
Publication of FR813385A publication Critical patent/FR813385A/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)
FR813385D 1935-05-11 1936-05-09 Measuring or control device Expired FR813385A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI813385X 1935-05-11

Publications (1)

Publication Number Publication Date
FR813385A true FR813385A (en) 1937-05-31

Family

ID=8556302

Family Applications (1)

Application Number Title Priority Date Filing Date
FR813385D Expired FR813385A (en) 1935-05-11 1936-05-09 Measuring or control device

Country Status (1)

Country Link
FR (1) FR813385A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496256A1 (en) * 1980-12-15 1982-06-18 Wache Albert Compact magnetic compass - has photoelectric potentiometric read=out in package connected by flexible spring wires to supporting rings
WO1982002088A1 (en) * 1980-12-15 1982-06-24 Albert Wache Optoelectrical magnetic compass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2496256A1 (en) * 1980-12-15 1982-06-18 Wache Albert Compact magnetic compass - has photoelectric potentiometric read=out in package connected by flexible spring wires to supporting rings
WO1982002088A1 (en) * 1980-12-15 1982-06-24 Albert Wache Optoelectrical magnetic compass

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