Aluminum Alloy Material: The stair gauge is made of premium aluminum alloy, the appearance is anodized, wear resistance, corrosion resistance, strong and . Hex Flat Design: Hex flat design gauge is more suitable for edges rather than circles, the gauge block can be completely perpendicular to the material, very stable and accurate clamping of the workpiece. Thumb Screws: The stair gauge is equipped with black oxide steel thumb screws, which are non slip and , easy to grip and screw to any raft frame, and easy to carry even with gloves. Main Application: The stair gauge is mainly used for stair longitudinal beam layout, rafter layout, etc. It is easy to arrange on any material, especially when there is a crevice at the edge of the wood. Replacement: This stair gauge can be easily used with fine workmanship, replacement for the old and damaged, Manufacturer: OTENC