STAEDTLER MARS triangular ruler, 36cm, 3mm thick, perfect for precise drafting. - Brand: STAEDTLER - Model Name: MARS - Size: 36cm - Thickness: 3mm Thank you for viewing. I purchased this around September and used it several times for a certification exam. There are two types: 45° and 30°. A case is also included. There are no chips or damage. I purchased it for 2970 yen. Thank you for your consideration.