FR420341A - Instrument topographique plus particulièrement destiné au nivellement - Google Patents

Instrument topographique plus particulièrement destiné au nivellement

Info

Publication number
FR420341A
FR420341A FR420341DA FR420341A FR 420341 A FR420341 A FR 420341A FR 420341D A FR420341D A FR 420341DA FR 420341 A FR420341 A FR 420341A
Authority
FR
France
Prior art keywords
leveling
particularly intended
topographic instrument
topographic
instrument
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)
Inventor
Camille Bletry
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.)
CAMILLE BLETRY
Original Assignee
CAMILLE BLETRY
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 CAMILLE BLETRY filed Critical CAMILLE BLETRY
Application granted granted Critical
Publication of FR420341A publication Critical patent/FR420341A/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)
FR420341D 1910-09-12 1910-09-12 Instrument topographique plus particulièrement destiné au nivellement Expired FR420341A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR420341T 1910-09-12

Publications (1)

Publication Number Publication Date
FR420341A true FR420341A (fr) 1911-01-27

Family

ID=1463488

Family Applications (1)

Application Number Title Priority Date Filing Date
FR420341D Expired FR420341A (fr) 1910-09-12 1910-09-12 Instrument topographique plus particulièrement destiné au nivellement

Country Status (1)

Country Link
FR (1) FR420341A (fr)

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