FR899239A - Precision protractor device - Google Patents

Precision protractor device

Info

Publication number
FR899239A
FR899239A FR899239DA FR899239A FR 899239 A FR899239 A FR 899239A FR 899239D A FR899239D A FR 899239DA FR 899239 A FR899239 A FR 899239A
Authority
FR
France
Prior art keywords
protractor device
precision
precision protractor
protractor
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
Alfred-Louis Guesdon
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 FR899239A publication Critical patent/FR899239A/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
    • G01C1/00—Measuring angles
    • 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
FR899239D 1943-07-01 1943-07-01 Precision protractor device Expired FR899239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR899239T 1943-07-01

Publications (1)

Publication Number Publication Date
FR899239A true FR899239A (en) 1945-05-24

Family

ID=9392223

Family Applications (1)

Application Number Title Priority Date Filing Date
FR899239D Expired FR899239A (en) 1943-07-01 1943-07-01 Precision protractor device

Country Status (1)

Country Link
FR (1) FR899239A (en)

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