Japanese SHINWA 78233 Free angle circular saw guide rail ruler 30 cm. I can't name the brand because its written in Japanese lettering. It's I good shape. There are some stains on the stainless part. I believe it can be buffed out. I don't want to disturb the patina. It's 18" long.and 15 1/4" at 90% at right angle. A sliding part can extend to 35"