Patent ID: 7269909

Claim:
A rafter square for making compound cuts comprising: a) a protractor member comprising a straight edge and associated semi-circular pitch indicator guide, each having indicia disposed thereon; b) an elongate indicator slide arm have a recess extending longitudinally through the central portion thereof forming a slide track that is used to engage a center point of said straight edge as a pivot and slide point, said indicator slide arm having indicia extending lengthwise along each edge thereof; c) retaining means for releasing and securing said indicator slide arm to said straight edge to allow and prevent the movement thereof accordingly; d) an elongate 90-degree arm have a recess extending longitudinally through the central portion thereof forming a slide track that is used to intersect said slide track of said indicator slide arm as a pivot and slide point, said 90-degree arm having indicia extending lengthwise along each edge thereof; and e) retaining means for releasing and securing said 90-degree arm to said indicator slide arm to allow and prevent the movement thereof accordingly.