FR431221A - Lateral operating mechanism graphometer square - Google Patents

Lateral operating mechanism graphometer square

Info

Publication number
FR431221A
FR431221A FR431221DA FR431221A FR 431221 A FR431221 A FR 431221A FR 431221D A FR431221D A FR 431221DA FR 431221 A FR431221 A FR 431221A
Authority
FR
France
Prior art keywords
graphometer
square
operating mechanism
lateral operating
lateral
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.)
LUNETIERS POSTEL BLANC BOURSE ET CIE Ste
Original Assignee
LUNETIERS POSTEL BLANC BOURSE ET CIE Ste
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 LUNETIERS POSTEL BLANC BOURSE ET CIE Ste filed Critical LUNETIERS POSTEL BLANC BOURSE ET CIE Ste
Application granted granted Critical
Publication of FR431221A publication Critical patent/FR431221A/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)
FR431221D 1911-06-17 1911-06-17 Lateral operating mechanism graphometer square Expired FR431221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR431221T 1911-06-17

Publications (1)

Publication Number Publication Date
FR431221A true FR431221A (en) 1911-11-06

Family

ID=1473401

Family Applications (1)

Application Number Title Priority Date Filing Date
FR431221D Expired FR431221A (en) 1911-06-17 1911-06-17 Lateral operating mechanism graphometer square

Country Status (1)

Country Link
FR (1) FR431221A (en)

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