Crescent Lufkin New Speed Square With Extending RuleThe Crescent Lufkin 2 in 1 Extendable Layout Tool & Speed Square makes woodworking and framing quicker and easier. It's made from solid aluminium with laser etched markings and a quick access thumb lock, the tool & square are both lightweight, strong, corrosion resistant and a must for any toolbox. The square itself acts as a continuous edge for scribing and marking, and with its unique patented folding feature, it allows you to extend the square from