The function of marble square ruler

It is a measuring tool, abbreviated as an angle ruler, also known as a guiding rule in some cases, used to detect the perpendicularity of the workpiece and the perpendicularity of the workpiece relative to the material position, and sometimes used for marking lines. Suitable for verticality inspection, installation, machining positioning, marking, etc. of machine tools, mechanical equipment, and components, it is an important measuring tool in the mechanical industry. Its characteristics are good stability and easy maintenance.