FR341465A - Optical instrument for measuring distances and heights - Google Patents

Optical instrument for measuring distances and heights

Info

Publication number
FR341465A
FR341465A FR341465DA FR341465A FR 341465 A FR341465 A FR 341465A FR 341465D A FR341465D A FR 341465DA FR 341465 A FR341465 A FR 341465A
Authority
FR
France
Prior art keywords
heights
optical instrument
measuring distances
distances
measuring
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
James Gordon Stewart
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 FR341465A publication Critical patent/FR341465A/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
    • G01C3/02—Details
    • G01C3/04—Adaptation of rangefinders for combination with telescopes or binoculars
    • 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
    • G01C3/14—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 binocular observation at a single point, e.g. stereoscopic type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR341465D 1904-03-19 1904-03-19 Optical instrument for measuring distances and heights Expired FR341465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR341465T 1904-03-19

Publications (1)

Publication Number Publication Date
FR341465A true FR341465A (en) 1904-08-09

Family

ID=1390524

Family Applications (1)

Application Number Title Priority Date Filing Date
FR341465D Expired FR341465A (en) 1904-03-19 1904-03-19 Optical instrument for measuring distances and heights

Country Status (1)

Country Link
FR (1) FR341465A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386878A1 (en) * 1977-04-05 1978-11-03 Ducommun Georges Aid for blind for recognising obstacles - has electronic system generating audible signals for sensing distance to obstruction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386878A1 (en) * 1977-04-05 1978-11-03 Ducommun Georges Aid for blind for recognising obstacles - has electronic system generating audible signals for sensing distance to obstruction

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