Johnson Level 48" Aluminum Drywall T-Square

The Johnson Level 48" Aluminum Drywall T-Square is used in technical drawing, primarily as a guide for drawing straight horizontal lines on a drafting table. It can also be used in conjunction with a set square to draw vertical and angled lines. Made of extruded aluminum 1/8" blade and head thickness with the clear protective anodized finish this T-square will not rust or corrode.