FR547411A - Plumb bob with light indications - Google Patents

Plumb bob with light indications

Info

Publication number
FR547411A
FR547411A FR547411DA FR547411A FR 547411 A FR547411 A FR 547411A FR 547411D A FR547411D A FR 547411DA FR 547411 A FR547411 A FR 547411A
Authority
FR
France
Prior art keywords
plumb bob
light indications
indications
light
plumb
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
Francois-Rene Dacheux
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 FR547411A publication Critical patent/FR547411A/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
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/10—Plumb lines
    • G01C15/105—Optical plumbing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR547411D 1922-02-17 1922-02-17 Plumb bob with light indications Expired FR547411A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR547411T 1922-02-17

Publications (1)

Publication Number Publication Date
FR547411A true FR547411A (en) 1922-12-12

Family

ID=8934198

Family Applications (1)

Application Number Title Priority Date Filing Date
FR547411D Expired FR547411A (en) 1922-02-17 1922-02-17 Plumb bob with light indications

Country Status (1)

Country Link
FR (1) FR547411A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538475A (en) * 1948-08-13 1951-01-16 Jr Frederick J Skrastin Surveyor's illuminated backsight
US2583491A (en) * 1948-02-27 1952-01-22 Orlando Joseph Francis Plumb bob device
US2665498A (en) * 1950-06-24 1954-01-12 Edward C Mitchell Electro plumb bob
US3184589A (en) * 1963-04-08 1965-05-18 Alfred L Gibbens Flashlight attachment
US4597186A (en) * 1985-08-12 1986-07-01 Peter Markos Lighted plumb bob
US4625428A (en) * 1985-04-26 1986-12-02 Griffin Gerald E Lighted plumb bob

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583491A (en) * 1948-02-27 1952-01-22 Orlando Joseph Francis Plumb bob device
US2538475A (en) * 1948-08-13 1951-01-16 Jr Frederick J Skrastin Surveyor's illuminated backsight
US2665498A (en) * 1950-06-24 1954-01-12 Edward C Mitchell Electro plumb bob
US3184589A (en) * 1963-04-08 1965-05-18 Alfred L Gibbens Flashlight attachment
US4625428A (en) * 1985-04-26 1986-12-02 Griffin Gerald E Lighted plumb bob
US4597186A (en) * 1985-08-12 1986-07-01 Peter Markos Lighted plumb bob

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