FR1132754A - Method and device for trisection of angles - Google Patents

Method and device for trisection of angles

Info

Publication number
FR1132754A
FR1132754A FR1132754DA FR1132754A FR 1132754 A FR1132754 A FR 1132754A FR 1132754D A FR1132754D A FR 1132754DA FR 1132754 A FR1132754 A FR 1132754A
Authority
FR
France
Prior art keywords
trisection
angles
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
Henri Boeckler
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 FR1132754A publication Critical patent/FR1132754A/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)
FR1132754D 1955-10-12 1955-10-12 Method and device for trisection of angles Expired FR1132754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1132754T 1955-10-12

Publications (1)

Publication Number Publication Date
FR1132754A true FR1132754A (en) 1957-03-15

Family

ID=9638535

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1132754D Expired FR1132754A (en) 1955-10-12 1955-10-12 Method and device for trisection of angles

Country Status (1)

Country Link
FR (1) FR1132754A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008236A (en) * 1956-12-03 1961-11-14 Donald E Hanson Angle trisector
DE102009046643A1 (en) * 2009-11-11 2011-05-12 Universität Rostock Device and method for measuring tibia displacement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008236A (en) * 1956-12-03 1961-11-14 Donald E Hanson Angle trisector
DE102009046643A1 (en) * 2009-11-11 2011-05-12 Universität Rostock Device and method for measuring tibia displacement
DE102009046643B4 (en) * 2009-11-11 2011-09-15 Universität Rostock Device for measuring tibia displacement

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