Wiseup Aluminum Angle Square Ruler
Size : 25cm / 8.5"
30cm / 10.5"
40cm / 14 3/8"
50cm / 18 3/8"
. Material : Made of aluminum, making it durable yet lightweight
. Features dual scales in both centimeters and inches
. Primarily used for measuring the accuracy of 90-degree angles (right angles). 
. Includes a built-in spirit level for checking horizontal or vertical levelness. 
. This is a Wiseup aluminum try square, a measuring tool used in carpentry and construction.