has all of the standard features of The
Basic plus the outer body of this tool has a
conversion chart that converts a plumb angle into a seat angle
or a whole angle into the right angle and the corresponding
miter angle. The inner blade is slotted like The Basic, has a
roof pitch conversion chart that works like The Framer for
converting roof pitches into degrees (one through 20 in 12) on
one side of the blade and a seven inch rule on the reverse.