Triangular Scale SIGA JAPAN Koshu Keiki Kogyo Purchased several decades ago. It has been stored with almost no use. I think it's a beautiful item with no noticeable scratches, but please check the photos carefully. Introduction of Koshu Keiki Kogyo Co., Ltd. Manufacturing drafting supplies that require precision and accuracy Precise and accurate processing technology is essential for manufacturing drafting supplies. As proof that we manufacture high-quality drafting supplies, we have obtained the JIS mark and JPR (Japan Plastic Ruler Performance Mark). Triangular scale Japan's No. 1 share We were the first in the world to complete the length measurement method using injection molding and succeeded in mass-producing high-precision triangular scales. In the Showa era, our triangular scales had a domestic share of over 70%. And even now, we maintain the top share in the industry. This technology and know-how is also utilized in the manufacture of high-precision acrylic rulers. It is our pride to accurately and stably manufacture tools that are indispensable in Japanese life and in all manufacturing sites. Koshu Keiki Kogyo quality recognized overseas Our triangular scales, after receiving high praise in Japan, have come to be widely used overseas. Currently, about 40% of the triangular scales we manufacture are exported overseas. In the United States, our triangular scales account for about 70% of the market share, which shows how highly they are rated. We are not satisfied with this situation and will continue to pursue even higher precision manufacturing as a leading company in "length measurement."