This multifunctional metal gauge thickness tool integrates the practical functions of shingle gauge and roof pitch gauge, specially developed for roof inspection and thickness measurement of various roofing materials. Adopting premium thickened stainless steel as raw material, the tool features high hardness, rust proof and wear resistant properties, adapting to harsh outdoor construction environments and ensuring long term stable use.Optimized measuring structure and clear scale design deliver accurate and fast reading effect, with simple sliding placement operation suitable for professional contractors, roof inspectors and DIY enthusiasts. The built in magnetic anti slip structure can closely attach to metal roof surfaces to prevent slipping during use, greatly improving measuring stability and operation convenience.Widely applicable to metal roof, asphalt shingle, single dual ply membrane and multiple common roofing materials such as EPDM, TPO and PVC. It covers usage scenarios of roof installation, maintenance, construction workshop detection and residential building roof assessment, being an essential practical measuring tool for all roofing related measurement work.