Johnson Level 48" "The Original" Aluminum Adjust-A-Square T-Square

The Johnson Level 48" "The Original" Aluminum Adjust-A-Square T-Square features a precision-machined head and blade lock together for a perfect 90 degrees angle. Its head adjusts to any height between 25” and 48”. This T-square is an essential marking tool for making cuts at right angles and as a primary guide for drawing straight horizontal lines on a drafting table.