You can measure from top to bottom or bottom to top with this reverse rule, Bon Tool T-Square. Ideal for use with measuring and cutting drywall but can also be used as a drawing instrument for drawing or testing right angles. This T-Square is made with 3/16 inch heavy duty blade to reduce curling or warping and the head is made with 3/8 inch flanger.

Features:

• 48″ x 22″ x 2″
• 3/16″ Heavy duty blade reduces curling and warping
• Reverse ruled for measurement from top to bottom or bottom to top