This folding ruler can measure up to its competition. Every section of wood_stock^® is made from a different timber, thereby serving as a pocket-size dictionary of woods. On one side, it is a calibrated measuring stick. On the other side, you can read information about each type of wood. Regardless if cherry, walnut, European or Brazilian tropical timbers – all wood_stock^® rulers are made of FSC^®-certified wood originating in sustainably managed forests.