FR2292954A1 - Angular position indicator using Moire fringes - has rotatable part pivoted on straight-edged stationary part for use like bubble level - Google Patents

Angular position indicator using Moire fringes - has rotatable part pivoted on straight-edged stationary part for use like bubble level

Info

Publication number
FR2292954A1
FR2292954A1 FR7439070A FR7439070A FR2292954A1 FR 2292954 A1 FR2292954 A1 FR 2292954A1 FR 7439070 A FR7439070 A FR 7439070A FR 7439070 A FR7439070 A FR 7439070A FR 2292954 A1 FR2292954 A1 FR 2292954A1
Authority
FR
France
Prior art keywords
angular position
straight
stationary part
position indicator
pivoted
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.)
Granted
Application number
FR7439070A
Other languages
French (fr)
Other versions
FR2292954B1 (en
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
Priority to FR7439070A priority Critical patent/FR2292954A1/en
Publication of FR2292954A1 publication Critical patent/FR2292954A1/en
Application granted granted Critical
Publication of FR2292954B1 publication Critical patent/FR2292954B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
  • Golf Clubs (AREA)

Abstract

An instrument for the indication or checking of the angular position of an object, comprises a stationary part and a movable part, the movable part being pivoted to the stationary part, and rotatable about an axis which is not coincident with the mass centre of the movable part, and the stationary part having at least one straight edge that can be placed against a surface of the object. Each part has a pattern of equally wide, parallel lines separated by interspaces of the same width as the lines, the interspaces being transparent on at least of the parts, and the two line patters together forming a Moire pattern.
FR7439070A 1974-11-28 1974-11-28 Angular position indicator using Moire fringes - has rotatable part pivoted on straight-edged stationary part for use like bubble level Granted FR2292954A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7439070A FR2292954A1 (en) 1974-11-28 1974-11-28 Angular position indicator using Moire fringes - has rotatable part pivoted on straight-edged stationary part for use like bubble level

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7439070A FR2292954A1 (en) 1974-11-28 1974-11-28 Angular position indicator using Moire fringes - has rotatable part pivoted on straight-edged stationary part for use like bubble level

Publications (2)

Publication Number Publication Date
FR2292954A1 true FR2292954A1 (en) 1976-06-25
FR2292954B1 FR2292954B1 (en) 1979-03-16

Family

ID=9145359

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7439070A Granted FR2292954A1 (en) 1974-11-28 1974-11-28 Angular position indicator using Moire fringes - has rotatable part pivoted on straight-edged stationary part for use like bubble level

Country Status (1)

Country Link
FR (1) FR2292954A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426884A1 (en) * 1978-05-25 1979-12-21 Bergkvist Lars A ANGLE INDICATOR DEVICE TO INDICATE TWO PERPENDICULAR DIRECTIONS BETWEEN THEM
FR2640042A1 (en) * 1988-12-06 1990-06-08 Crouzet Sa Pendulum clinometer with optical reading

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426884A1 (en) * 1978-05-25 1979-12-21 Bergkvist Lars A ANGLE INDICATOR DEVICE TO INDICATE TWO PERPENDICULAR DIRECTIONS BETWEEN THEM
FR2640042A1 (en) * 1988-12-06 1990-06-08 Crouzet Sa Pendulum clinometer with optical reading

Also Published As

Publication number Publication date
FR2292954B1 (en) 1979-03-16

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