FR416091A - Rangefinder improvements - Google Patents

Rangefinder improvements

Info

Publication number
FR416091A
FR416091A FR416091DA FR416091A FR 416091 A FR416091 A FR 416091A FR 416091D A FR416091D A FR 416091DA FR 416091 A FR416091 A FR 416091A
Authority
FR
France
Prior art keywords
rangefinder
rangefinder improvements
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
George Henry Derrick
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.)
GEORGE HENRY DERRICK
Original Assignee
GEORGE HENRY DERRICK
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 GEORGE HENRY DERRICK filed Critical GEORGE HENRY DERRICK
Application granted granted Critical
Publication of FR416091A publication Critical patent/FR416091A/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
    • G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR416091D 1910-05-18 1910-05-18 Rangefinder improvements Expired FR416091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR416091T 1910-05-18

Publications (1)

Publication Number Publication Date
FR416091A true FR416091A (en) 1910-10-11

Family

ID=1459624

Family Applications (1)

Application Number Title Priority Date Filing Date
FR416091D Expired FR416091A (en) 1910-05-18 1910-05-18 Rangefinder improvements

Country Status (1)

Country Link
FR (1) FR416091A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584818A (en) * 1946-11-18 1952-02-05 Eugene F Hartley Lens coupled range finder for cameras

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584818A (en) * 1946-11-18 1952-02-05 Eugene F Hartley Lens coupled range finder for cameras

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