Patent ID: 7159498

Claim:
A miter box for guiding a circular saw, comprising: an I-beam comprised of a rigid base plate having opposing first and second base plate edges disposed along its elongated length, and a first flange and a second flange respectively attached to said opposing first and second base plate edges along said elongated length of said rigid base plate, said first and second flanges disposed generally transverse to said rigid base plate so as to define at least one channel between said first and second flanges; said first and second flanges each having a pair of opposing support faces disposed along opposing edge portions of each said first and second flanges distal from said rigid base plate; a first transverse guide member extending from a first one of said support faces on said first flange to a second one of said support faces on said second flange, said first transverse guide member having a first guide surface extending transverse to said support faces and a second guide surface aligned with at least a portion of said first and second support faces, said first guide surface positioned a predetermined distance from an end portion of said I-beam.