Zona L-Square Ruler
Make sure your angles are correct and check all your measurements with this 3 inch x 4 inch L shape ruler. It is made of .022 inches thick stainless steel and has 3/32 inch measuring intervals on the front and metric equivalent on the back. An excellent tool for building your Pinewood Derby car. Ideal for checking the squareness of the axle slots to the body block. Great for laying out your design on the block.