Hello. This is a T-square I used when I was aiming to be a painter. It's a used item. The screw part is rusty. There are no problems with its use. I am selling it because I no longer need it. Thank you. Size: 82cm x 28cm x 1cm Made in Japan The basic way to use a T-square is to place the head (short part) against the edge of a drawing board or work table and hold it by hand, sliding it to draw accurate horizontal lines along the body (long part). Also, by placing a triangle ruler on the upper edge of the body and sliding the triangle ruler while keeping the head along the edge of the drawing board, you can draw vertical and diagonal lines. (Photo) ◆Notes◆ Please consider purchasing after carefully checking the photos. I am also selling on other apps, so it will be first come, first served. Please understand that we cannot respond to complaints, returns, or refunds after purchase. This is a used item, so please refrain from purchasing if you are sensitive to such things. Thank you for looking.