This Lufkin 6 ft x 5-8 In. Flat Reading Wood Rule is an accurate and reliable tool for professional and DIY projects. The rule is marked on both sides and edges, graduated to 1/16th both edges, and features 16" stud centers marked in red. This wood rule is also designed with inside markings for numbering beginning on the inside, and regular outside markings. Durable and easy to use, it is sure to be an invaluable tool.