FR874021A - Niveau topographique à ligne de mire automatiquement horizontale - Google Patents

Niveau topographique à ligne de mire automatiquement horizontale

Info

Publication number
FR874021A
FR874021A FR874021DA FR874021A FR 874021 A FR874021 A FR 874021A FR 874021D A FR874021D A FR 874021DA FR 874021 A FR874021 A FR 874021A
Authority
FR
France
Prior art keywords
sight
horizontal line
automatic horizontal
topographic level
topographic
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
English (en)
Inventor
Frederico Bonechi
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 FR874021A publication Critical patent/FR874021A/fr
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
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR874021D 1940-07-31 1941-07-18 Niveau topographique à ligne de mire automatiquement horizontale Expired FR874021A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT874021X 1940-07-31

Publications (1)

Publication Number Publication Date
FR874021A true FR874021A (fr) 1942-07-27

Family

ID=11330837

Family Applications (1)

Application Number Title Priority Date Filing Date
FR874021D Expired FR874021A (fr) 1940-07-31 1941-07-18 Niveau topographique à ligne de mire automatiquement horizontale

Country Status (1)

Country Link
FR (1) FR874021A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044343A (en) * 1958-04-17 1962-07-17 Fontguyon Marie Pierre Poit De Optical instrument of the reflection type
DE1252910B (de) * 1961-05-20 1967-10-26 Kern & Co Ag Optisches Glied zur Beeinflussung der Richtung des Fernrohr- oder Kreisablesestrahlenganges in optischen Instrumenten
DE1253467B (de) * 1957-04-19 1967-11-02 Marie Pierre Poitevin De Fontg Mit Rueckstrahlung und zugeordneten Strahlenbrechungen arbeitendes optisches Geraet
FR2189760A1 (fr) * 1972-05-26 1974-01-25 Rank Organisation Ltd
US5513001A (en) * 1992-11-12 1996-04-30 Kabushiki Kaisha Topcon Tilt angle automatic compensator in all directions

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1253467B (de) * 1957-04-19 1967-11-02 Marie Pierre Poitevin De Fontg Mit Rueckstrahlung und zugeordneten Strahlenbrechungen arbeitendes optisches Geraet
US3044343A (en) * 1958-04-17 1962-07-17 Fontguyon Marie Pierre Poit De Optical instrument of the reflection type
DE1252910B (de) * 1961-05-20 1967-10-26 Kern & Co Ag Optisches Glied zur Beeinflussung der Richtung des Fernrohr- oder Kreisablesestrahlenganges in optischen Instrumenten
FR2189760A1 (fr) * 1972-05-26 1974-01-25 Rank Organisation Ltd
US5513001A (en) * 1992-11-12 1996-04-30 Kabushiki Kaisha Topcon Tilt angle automatic compensator in all directions

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