Patent ID: 7908755

Claim:
An articulating straight-edge apparatus, said apparatus comprising: an asymmetrical hub with a lobe having a flat edge, said hub comprised of: a bearing hole, an axle, a circular side with a plurality of recesses which provide click position stopping at pre-set angles, and a secant slotted channel through at least a portion of the lobe, where said slotted channel has a floor with one or more depressions which provide click position stopping for a translational shift; a connecting block with a back plate and an angle positioning spring loaded device seated in the block and aligned to impinge a recess as the hub is rotated, therein producing angular click position stopping at a recess; a translational shift mechanism comprising a sliding rail that is positioned in the secant slotted channel, said sliding rail having a translational shift positioning spring loaded device aligned to impinge a depression as the sliding rail moves through the secant slotted channel, therein producing translational shift click position stopping at a depression; and a straight-edge element with a length, a width and a thickness, where said straight-edge element is fastened to the sliding rail, where said straight-edge element is supported by the flat edge of the hub, and where application of manual force can cause the straight-edge element to rotate to another angle and or to shift to another position.