Crescent Lufkin LS300X6 2-in-1 Extendable Speed Square

The 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 150 to 300m.