This item belonged to my grandfather, who was in the art field. It's old, dating back to around the 1960s to 1970s. It's in beautiful condition, with no warping, and only a few small spots. The wood grain is lovely on this cloud curve ruler. It fits in a box that is 16cm x 7cm. The box is damaged, so please let me know in advance if you don't need it. It's an old item, but I believe it's rare, so I appreciate your consideration.