12 pieces of corner tool, can adjust the drilling position to B. Mark the tiles accurately. It is an integrated tool. measurement and positioning holes. This measuring ruler folds easily, takes up little space and can be easily transported to any construction site. Ideal for measuring surfaces of brick, paper, stone, tile, wood and more. Improvements in materials and design The multi-function measuring ruler is made of high quality aluminum alloy, very resistant to damage. wear and resistant. equipped; metal buttons. They are stronger than plastic buttons and therefore more durable. The edges are rounded and smooth without burrs to avoid injury. No complicated processing; it is necessary. Precise Measurement Our multi-angle measurement ruler is an ideal tool for precise angle measurement. Inches and centimeters on the scale, all laser engraving will not fade or wear out, keep them legible even if you use the slide ruler for a long time for accurate measurement [Easy to use]