Patent ID: 7921574

Claim:
A apparatus for aiding marking or cutting a flat object, comprising: a length of a first material having a V-shaped cross section with an apex formed by an intersection of planes coincident with a first exterior surface and a second exterior surface of the V-shaped cross section; and, a third and a fourth exterior surface of an apex of the V-shaped cross section are substantially flat surfaces extending along a length of the apparatus, wherein a flat portion of each of the first exterior surface or the second exterior surface is separately positionable in contact with a surface of the flat object, while the other of the first exterior surface or the second exterior surface is not in contact with the surface of the flat object, and an interior angle between the first exterior surface and the second exterior surface is an acute angle; the third and fourth the flat surfaces are symmetrically disposed with respect to an axis of symmetry of the V-shaped cross section, and an angle formed between a plane passing through a flat surface of the flat surfaces and a plane passing through an adjoining one of the first or the second surfaces is approximately the compliment of an internal apex angle of the V-shaped cross section.