Encyclopedia & FAQ's

DIY Frequently Asked Questions / Framing Square


  • DIY Frequently Asked Questions / Framing Square')"> 90 degree L-shaped tool made from one piece of material (steel or aluminum), with the long end (blade) usually 24″ and the short end (tongue) 16″.
  • Also known as carpenter’s or rafter square because this tool is generally used for laying out rafters and marking stair stringers.
  • Similar squares are also available in other sizes (8″ x 12″).
  • Generally has framing tables (rafter and Essex tables) etched into the body to provide information on roof framing.
  • Also has ruler increments printed on the inside and outside edges.