Ludwig Precision Aluminum T-Square, 1 1/2in x 18in, Standard

Durable materials provide high-impact strength Calibrated to 32nds through the first 6in along the top edge. Bottom edge features cm and mm calibrations. 12in head is calibrated to 4in on each side of the blade. Blades are made from hard-tempered aluminum and attached to the plastic T-head with 4 rivets.