Device for drawing objects in perspective

A device to aid a draftsman or the like for drawing objects in perspective comprising:

• a planar body, said body having a substantially straight base edge, a substantially straight left upper surface edge, a substantially straight right upper surface edge, said left and right upper surface edges being joined together to form a pre-determined angle, said angle to be utilized in the drawing of a perspective figure, a left vertically disposed side edge, a right vertically disposed side edge, the upper end of said left upper surface edge forming a left vertex adjacent the upper end of said left side edge, the upper end of said right upper edge forming a right vertex adjacent the upper end of said right side, said left vertex representing a left vanishing point and said right vertex representing a right vanishing point, a first scale having a plurality of linearly spaced indicia disposed on said body adjacent the base edge of said body for use with the right upper edge and a second scale having a plurality of linearly spaced indicia disposed on said body adjacent the base edge of said body for use with said left upper surface edge, a third scale having a plurality of spaced indicia disposed on said body adjacent said right upper edge, said third scale indicia being determined by the intersection of a plurality of lines connecting said first scale indicia to a pre-determined point lying outside of said body and a fourth scale having a plurality of indicia disposed on said body adjacent said left upper edge, said fourth scale indicia being determined by the intersection of a plurality of lines connecting said second scale indicia to a single pre-determined point lying outside of said body.