For the safe dissipation of tensile, compressive and shear forces in batten constructions of on-roof insulation, not only the right type of screw plays a role, but also the right screw-in angle. To ensure the ideal 67� angle for our screws, we offer you as a fabricator a stable screw-in gauge. It provides our pan head and fully threaded screws with a degree- and point-accurate aid on their way into the wood. For you, this means: No more tedious measuring or inaccurate estimation of the screw-in angle. You really save time and money.