[Product Specification] Thickness Gauge For Metal Roofing And Membrane Roofing Single Double Ply. (The magnet is attracted to it and is well protected from damage. ) [Easy to Use] This Panel & Membrane Gauge Shingle itself has a very solid feeling in your hand. Handy tool to have on hand. It scales for three materials: Steel, Aluminum and Single-ply. It is a snap to use. Just slide it into slots until it no longer slides in, and read the thickness. [Wide Range of Applications] This Panel & Membrane Gauge Shingle is widely used in building industry, home, pro workshop, measuring sheets of metal as well as corrugated roofing panels. [High Quality Materials] The Panel & Membrane Gauge Shingle is made of high quality thick stainless steel. The production process has been upgraded. Compared with other similar measuring tool for roof shingle, we have 4 major advantages: 1. Higher . 2. More Wear-. 3. More . 4. Higher Hardness. It give you a better experience., Manufacturer: Akfldms