FR491983A - Improvements to range finders - Google Patents

Improvements to range finders

Info

Publication number
FR491983A
FR491983A FR491983DA FR491983A FR 491983 A FR491983 A FR 491983A FR 491983D A FR491983D A FR 491983DA FR 491983 A FR491983 A FR 491983A
Authority
FR
France
Prior art keywords
range finders
finders
range
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
Belton Tattnall Hamilton
Lewis Stroud
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR491983A publication Critical patent/FR491983A/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
    • G01C3/12—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 with monocular observation at a single point, e.g. coincidence type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR491983D 1915-06-23 1916-06-23 Improvements to range finders Expired FR491983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB491983X 1915-06-23

Publications (1)

Publication Number Publication Date
FR491983A true FR491983A (en) 1919-06-24

Family

ID=1527916

Family Applications (1)

Application Number Title Priority Date Filing Date
FR491983D Expired FR491983A (en) 1915-06-23 1916-06-23 Improvements to range finders

Country Status (1)

Country Link
FR (1) FR491983A (en)

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