300mm Combination Square-accurate Universal Metal With Ruler Stop And Marking Tool Precise - Your new combination square has no glare, centimeter (30cm) accurate measurement, millimeter line and perfect ground stop surface. Precise - your new combination square has the accuracy of no glare, double blackening - cm (30cm), with millimeter mark and perfect ground stop surface, a spirit level universal square can do more multi-angles, really can't be permanent - should it be an adjustable angle with stop rules? Let yourself believe that our cast zinc body, brass lock screw and stainless steel rule are in one - if there is a simpler way, why buy expensive separate tools for each work step? Our sliding steel ruler can be used alone, just like a level gauge. Smart - To ensure that your marking square is protected from external influences, you can store it in high-quality foam plastic packaging after each use.