B - Operations – Transporting – 43 – L
Patent
B - Operations, Transporting
43
L
B43L 9/00 (2006.01) B43L 7/10 (2006.01) B43L 9/02 (2006.01)
Patent
CA 2233916
A composite drawing instrument comprising at least one arm (6) for use as a graduated ruler for drawing straight lines or measuring lengths. The arm (6) comprises means (2) for finding the centre of a circle and means (9, 11) that may be combined with a writing instrument to draw the circumference of the circle. A transverse member (4) perpendicular to the arm (6) forms a set square. Said transverse member (4) and said arm (6) together form a protractor for measuring or drawing angles of all sizes.
La présente invention concerne un instrument de dessin composite, comportant au moins une branche (6) formant règle graduée pour tracer des segments de droite et pour mesurer des longueurs, la branche (6) comportant des moyens (2) pour repérer le centre d'un cercle et des moyens (9, 11) pour coopérer avec un instrument à écrire destiné à tracer la circonférence de ce cercle, un élément transversal (4) étant disposé perpendiculairement à la branche (6) pour former une équerre. Selon l'invention, l'élément transversal (4) forme avec la branche (6) un rapporteur pour mesurer ou tracer des angles de valeur quelconque.
Folivi Felix
Swabey Ogilvy Renault
LandOfFree
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