FR48787E - Method and device for the direct measurement of horizontal distances by means of range finders and rods - Google Patents

Method and device for the direct measurement of horizontal distances by means of range finders and rods

Info

Publication number
FR48787E
FR48787E FR48787DA FR48787E FR 48787 E FR48787 E FR 48787E FR 48787D A FR48787D A FR 48787DA FR 48787 E FR48787 E FR 48787E
Authority
FR
France
Prior art keywords
rods
direct measurement
range finders
horizontal distances
distances
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
Heinrich Alt
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 FR48787E publication Critical patent/FR48787E/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
    • G01C3/22—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length at, near, or formed by the object
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR48787D 1937-08-30 1937-08-30 Method and device for the direct measurement of horizontal distances by means of range finders and rods Expired FR48787E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR48787T 1937-08-30

Publications (1)

Publication Number Publication Date
FR48787E true FR48787E (en) 1938-06-23

Family

ID=8684063

Family Applications (1)

Application Number Title Priority Date Filing Date
FR48787D Expired FR48787E (en) 1937-08-30 1937-08-30 Method and device for the direct measurement of horizontal distances by means of range finders and rods

Country Status (1)

Country Link
FR (1) FR48787E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093904A (en) * 1959-04-24 1963-06-18 Keuffel & Esser Co Tangent screw

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3093904A (en) * 1959-04-24 1963-06-18 Keuffel & Esser Co Tangent screw

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