Mr. Pen – Truler is designed to equip architects, draftsmen, engineers and artists with the right tool for various projects. The package includes: 1 T-ruler: * 12 inch / 30 cm ruler * 8 in / 20cm graduated head * Made from high impact carbon steel * Black body with large white prints * Precise laser printed inch and centimeter measurements * Perfect for architects, engineers and artists * Can be used as T square, L square, L ruler