GB189806243A - An Improved Combined Square and Protractor. - Google Patents

An Improved Combined Square and Protractor.

Info

Publication number
GB189806243A
GB189806243A GB189806243DA GB189806243A GB 189806243 A GB189806243 A GB 189806243A GB 189806243D A GB189806243D A GB 189806243DA GB 189806243 A GB189806243 A GB 189806243A
Authority
GB
United Kingdom
Prior art keywords
protractor
improved combined
combined square
instrument
head
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
Inventor
John Alexander Rooney
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
Application granted granted Critical
Publication of GB189806243A publication Critical patent/GB189806243A/en
Expired legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Knives (AREA)

Abstract

6243. Rooney, J. A. March 14. Squares; protractors.- A protractor B is fixed to a head A which is made i two disconnectible parts. When the instrument is used as a protractor, the lower part is removed so that the instrument can lie flat on the paper. A graduated blade C is hinged to the head by a hollow pivot c, and can be clamped at D at any required angle. The blade may have one edge radial, or it may be slotted and one edge of the slot may be radial.
GB189806243D 1898-03-14 1898-03-14 An Improved Combined Square and Protractor. Expired GB189806243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB189806243T 1898-03-14

Publications (1)

Publication Number Publication Date
GB189806243A true GB189806243A (en) 1899-02-04

Family

ID=32139566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB189806243D Expired GB189806243A (en) 1898-03-14 1898-03-14 An Improved Combined Square and Protractor.

Country Status (1)

Country Link
GB (1) GB189806243A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244119A (en) * 1979-03-27 1981-01-13 Henri Klok Protractable straight-edge with vise

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244119A (en) * 1979-03-27 1981-01-13 Henri Klok Protractable straight-edge with vise

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