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FR984660A - Tacheometric protractor - Google Patents

Tacheometric protractor

Info

Publication number
FR984660A
FR984660A FR984660DA FR984660A FR 984660 A FR984660 A FR 984660A FR 984660D A FR984660D A FR 984660DA FR 984660 A FR984660 A FR 984660A
Authority
FR
France
Prior art keywords
tacheometric
protractor
tacheometric protractor
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
Charles-Edmond Ducastin
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 filed Critical
Application granted granted Critical
Publication of FR984660A publication Critical patent/FR984660A/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
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/26—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object
    • G01C3/28—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane
    • G01C3/30—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane with adaptation to the measurement of the height of an object, e.g. tacheometers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR984660D 1949-04-13 1949-04-13 Tacheometric protractor Expired FR984660A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR984660T 1949-04-13

Publications (1)

Publication Number Publication Date
FR984660A true FR984660A (en) 1951-07-09

Family

ID=9536894

Family Applications (1)

Application Number Title Priority Date Filing Date
FR984660D Expired FR984660A (en) 1949-04-13 1949-04-13 Tacheometric protractor

Country Status (1)

Country Link
FR (1) FR984660A (en)

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