Patent ID: 7204031

Claim:
A telescoping T-square, comprising: a flat, elongated cross-member having two parallel runners extending from a surface of the cross-member along the substantially the entire length of the cross-member, wherein: said cross-member has a slot defined therein extending from the center of the cross-member laterally towards one of the ends of the cross-member, the slot being parallel to and disposed between the runners; a first rod member having a solid top end having two transverse parallel channels defined therein and an elongated hollow body extending from the top end, the channels being perpendicular to the elongated hollow body, the runners being slidable in the channels, said first rod member further includes a threaded stud extending from the top end, the stud being disposed between the channels, the stud being slidable within the slot defined in said cross-member; a second elongated rod member telescopically slidable within the first rod member; and means for releasably connecting the cross-member and the first rod member, whereby the cross-member and the first and second rods form a T-square with a telescoping leg, said means for releasably connecting said cross-member and said first rod member including a knob threadably engaging the stud in order releasable secure said cross-member and said first rod together.