DRAWING APPLIANCE Russian patent published in 1997 - IPC

FIELD: drawing appliances. SUBSTANCE: ruler made up as a a triangle is secured to a limb-like jaw. Guide lines are secured to the lateral links and arranged from the outer side of the triangle. The end lateral links are connected with the planks ar the points that are coincident with the outer working side of the triangle. The intermediate lateral link is connected with the jaw ar the point which is coincident with the outer top of the triangle and made up as a rectangular sector. A facility for reading is made up as a scale pointer. EFFECT: improved design. 3 cl, 3 dwg