Swanson 48 in. - 1/8 in. T-Square with Scribe Bar Anodized Laser-Etched Scale

The heavy-duty drywall square is made from 3/16 in. high strength aluminum. The extra thick head is secured with 5 air craft alloy steel rivets for greater performance and durability. The 2 in. wide reverse ruled blade is standard outlet size with laser etched gradations for precise measurements in either direction.