Patent ID: 7228636

Claim:
A framing square comprising: a) a right-angle square formed from a first leg and a second leg at right angles to each other, said legs being joined at a right-angle connection; b) said right-angle square having a protractor shaped portion between said first and second legs extending from a midsection of said first leg to a midsection of said second leg and to said right-angle connection, said protractor shaped portion having a circular slot with angular indicia along edges of said slot; c) an indicator guide positioned on a first side of said right-angle square and having a proximate end pivotally connected at a pivot point positioned at said right angle connection and moveable about said pivot point; d) an indicator arm having a proximate end connected to the proximate end of said indicator guide, said indicator arm and said indicator guide being at a right angle to each other and rotatable together about said pivot point; e) said indicator guide having a member sliding in said circular slot of said proctor shaped portion and means for locking said indicator guide in a position along said slot so that a user is able to consistently measure a same angle; and g) said protractor shaped portion having a conversion table etched on a surface traversed by said indicator guide, said conversion guide being comprised of arithmetical guide markings for various style roofing including general angles, common rafters slope, hip valley rafters and octagonal construction whereby a user can selectively position said indicator arm to selectively choose an appropriate angle for one of a plurality of roofing styles, obtain a direct conversion parameter correspondent to said various style roofing, and at the same time use said conversion guide to calculate proper length and angles for specific rafter purposes without repositioning said indicator arm.