Aluminium straight rule

The utility model relates to an aluminum alloy straight ruler for solving the problems of precision and legerity. The aluminum straight ruler is provided with a front surface carved with scales of millimeter units, and the cross-section of the aluminum straight ruler forms a hollow rectangle. The utility model is characterized in that the hollow inner walls of both ends of the aluminum straight ruler are provided with end plugs used for sealing the ends. The outside surfaces of the walls of both ends and the outside surfaces of the end plugs of the aluminum straight ruler form smooth flat shapes. The utility model is used for measuring length.