FR728940A - Orientation compass - Google Patents

Orientation compass

Info

Publication number
FR728940A
FR728940A FR728940DA FR728940A FR 728940 A FR728940 A FR 728940A FR 728940D A FR728940D A FR 728940DA FR 728940 A FR728940 A FR 728940A
Authority
FR
France
Prior art keywords
orientation compass
compass
orientation
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)
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.)
E F BUCHI
Original Assignee
E F BUCHI
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 E F BUCHI filed Critical E F BUCHI
Application granted granted Critical
Publication of FR728940A publication Critical patent/FR728940A/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
FR728940D 1931-01-20 1931-12-29 Orientation compass Expired FR728940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH728940X 1931-01-20

Publications (1)

Publication Number Publication Date
FR728940A true FR728940A (en) 1932-07-13

Family

ID=4532191

Family Applications (1)

Application Number Title Priority Date Filing Date
FR728940D Expired FR728940A (en) 1931-01-20 1931-12-29 Orientation compass

Country Status (1)

Country Link
FR (1) FR728940A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150163A2 (en) * 1984-01-20 1985-07-31 Söderberg, Jan Orienteering Compass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150163A2 (en) * 1984-01-20 1985-07-31 Söderberg, Jan Orienteering Compass
EP0150163A3 (en) * 1984-01-20 1988-03-30 Söderberg, Jan Orienteering compass

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