FR409879A - Grasshopper or false square with protractor - Google Patents

Grasshopper or false square with protractor

Info

Publication number
FR409879A
FR409879A FR409879DA FR409879A FR 409879 A FR409879 A FR 409879A FR 409879D A FR409879D A FR 409879DA FR 409879 A FR409879 A FR 409879A
Authority
FR
France
Prior art keywords
grasshopper
protractor
false square
false
square
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
Gaston Vrinat
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.)
GASTON VRINAT
Original Assignee
GASTON VRINAT
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 GASTON VRINAT filed Critical GASTON VRINAT
Application granted granted Critical
Publication of FR409879A publication Critical patent/FR409879A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR409879D 1909-12-02 1909-12-02 Grasshopper or false square with protractor Expired FR409879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR409879T 1909-12-02

Publications (1)

Publication Number Publication Date
FR409879A true FR409879A (en) 1910-05-03

Family

ID=1453971

Family Applications (1)

Application Number Title Priority Date Filing Date
FR409879D Expired FR409879A (en) 1909-12-02 1909-12-02 Grasshopper or false square with protractor

Country Status (1)

Country Link
FR (1) FR409879A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080657A (en) * 1963-03-12 Lanski

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080657A (en) * 1963-03-12 Lanski

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