in use easy and convenient to use. Precise measurement: 2 mobile arms for measuring 85 to 180 ° angles can be directly used to measure all angles within this . Efficiency two in tool: the miter can be measured, and the cutting is completed without using multiple tools to avoid errors when transferring the correct to the . Precise sawing: use the integrated guide pin of the to place the base a guide plate provided, and use the back to sawing to achieve accurate beveling. Practical measurement+tool: it is used to solve the problem of chamfering in skirting boards or grooves requiring special measuring tools, and is used for pipe installation, home decoration and woodworking.