FR819563A - Trigonometric protractor - Google Patents

Trigonometric protractor

Info

Publication number
FR819563A
FR819563A FR819563DA FR819563A FR 819563 A FR819563 A FR 819563A FR 819563D A FR819563D A FR 819563DA FR 819563 A FR819563 A FR 819563A
Authority
FR
France
Prior art keywords
protractor
trigonometric
trigonometric 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
Eugene-Jean Sorez
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 FR819563A publication Critical patent/FR819563A/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
FR819563D 1937-03-22 1937-03-22 Trigonometric protractor Expired FR819563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR819563T 1937-03-22

Publications (1)

Publication Number Publication Date
FR819563A true FR819563A (en) 1937-10-21

Family

ID=9269465

Family Applications (1)

Application Number Title Priority Date Filing Date
FR819563D Expired FR819563A (en) 1937-03-22 1937-03-22 Trigonometric protractor

Country Status (1)

Country Link
FR (1) FR819563A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107038394A (en) * 2017-04-19 2017-08-11 中铁第五勘察设计院集团有限公司 A kind of measuring tool and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107038394A (en) * 2017-04-19 2017-08-11 中铁第五勘察设计院集团有限公司 A kind of measuring tool and preparation method thereof

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