FR869235A - Perfectionnements aux planchettes topographiques portatives - Google Patents

Perfectionnements aux planchettes topographiques portatives

Info

Publication number
FR869235A
FR869235A FR869235DA FR869235A FR 869235 A FR869235 A FR 869235A FR 869235D A FR869235D A FR 869235DA FR 869235 A FR869235 A FR 869235A
Authority
FR
France
Prior art keywords
boards
portable topographic
topographic
portable
topographic boards
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
English (en)
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.)
DORET ETS
Original Assignee
DORET ETS
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 DORET ETS filed Critical DORET ETS
Application granted granted Critical
Publication of FR869235A publication Critical patent/FR869235A/fr
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)
FR869235D 1940-02-06 1941-01-15 Perfectionnements aux planchettes topographiques portatives Expired FR869235A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MA869235X 1940-02-06

Publications (1)

Publication Number Publication Date
FR869235A true FR869235A (fr) 1942-01-27

Family

ID=19736945

Family Applications (1)

Application Number Title Priority Date Filing Date
FR869235D Expired FR869235A (fr) 1940-02-06 1941-01-15 Perfectionnements aux planchettes topographiques portatives

Country Status (1)

Country Link
FR (1) FR869235A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065145B (de) * 1955-10-04 1959-09-10 Otto Ivar Fransson Kartenumhuellung fuer militaerische Zwecke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065145B (de) * 1955-10-04 1959-09-10 Otto Ivar Fransson Kartenumhuellung fuer militaerische Zwecke

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