FR491407A - Walking compass - Google Patents

Walking compass

Info

Publication number
FR491407A
FR491407A FR491407DA FR491407A FR 491407 A FR491407 A FR 491407A FR 491407D A FR491407D A FR 491407DA FR 491407 A FR491407 A FR 491407A
Authority
FR
France
Prior art keywords
compass
walking
walking compass
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
Jean-Louis-William Cruchon
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.)
JEAN LOUIS WILLIAM CRUCHON
Original Assignee
JEAN LOUIS WILLIAM CRUCHON
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 JEAN LOUIS WILLIAM CRUCHON filed Critical JEAN LOUIS WILLIAM CRUCHON
Application granted granted Critical
Publication of FR491407A publication Critical patent/FR491407A/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
    • G01C17/10—Comparing observed direction with north indication
    • G01C17/12—Comparing observed direction with north indication by sighting means, e.g. for surveyors' compasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR491407D 1918-08-21 1918-08-21 Walking compass Expired FR491407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR491407T 1918-08-21

Publications (1)

Publication Number Publication Date
FR491407A true FR491407A (en) 1919-06-03

Family

ID=1527417

Family Applications (1)

Application Number Title Priority Date Filing Date
FR491407D Expired FR491407A (en) 1918-08-21 1918-08-21 Walking compass

Country Status (1)

Country Link
FR (1) FR491407A (en)

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