FR1080534A - Electrically lit spirit level - Google Patents

Electrically lit spirit level

Info

Publication number
FR1080534A
FR1080534A FR1080534DA FR1080534A FR 1080534 A FR1080534 A FR 1080534A FR 1080534D A FR1080534D A FR 1080534DA FR 1080534 A FR1080534 A FR 1080534A
Authority
FR
France
Prior art keywords
spirit level
electrically lit
lit
electrically
spirit
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
Georges Favrel
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 FR1080534A publication Critical patent/FR1080534A/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
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
    • G01C9/26—Details
    • G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating means
FR1080534D 1953-01-23 1953-01-23 Electrically lit spirit level Expired FR1080534A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1080534T 1953-01-23

Publications (1)

Publication Number Publication Date
FR1080534A true FR1080534A (en) 1954-12-09

Family

ID=9609631

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1080534D Expired FR1080534A (en) 1953-01-23 1953-01-23 Electrically lit spirit level

Country Status (1)

Country Link
FR (1) FR1080534A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484393A (en) * 1983-08-29 1984-11-27 Lafreniere Dennis M Illuminated spirit level
US4912854A (en) * 1988-10-19 1990-04-03 Weadon Joseph P Cross vial liquid bubble illuminated level

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484393A (en) * 1983-08-29 1984-11-27 Lafreniere Dennis M Illuminated spirit level
US4912854A (en) * 1988-10-19 1990-04-03 Weadon Joseph P Cross vial liquid bubble illuminated level

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