I don't know the details, but this is a ruler from Goshu Keiki Kogyo Co., Ltd. It's made of bamboo and comes with a case. I think it's quite old. There are small, spot-like stains on the back of the ruler. There are also some scratches and dirt on the front. The long ruler seems to be slightly warped. The case was also dirty, but I cleaned it to some extent. Shipping will likely be a bit cramped due to the length, but I plan to use Yu-Packet Post. Thank you.