The angle of the scale can be adjusted, the nut can be tightened to fix the angle, and measurements can be made smoothly to avoid variations during the measurement and to measurement accuracy us you have questions The tool is aluminum alloy durability and has stood the of for time This tool can withstand wear The etches the digital and does not fade Multi-function metal fold ruler with foldable rulers at every angle to meet your everyday needs For shaped tiles, you can easily cut out bricks like a ga-p, Manufacturer: TFAOYS