Standard rule for tinners and other sheetmetal workers
Tempered medium-weight steel
Black markings for easy reading
One side upper edge marked inches to 1/16ths
Reverse side has formulas for calculating circumference, diameter, area
Hole in one end for hanging
Since Lufkin's founding in 1869, Crescent Lufkin® has stood at the forefront of measuring tools and equipment, with industry-leading quality and innovation. We enable the consumer or professional user with reliable, precise, durable lines of products, including our wooden measuring rules. Since patenting the Lufkin Folding Rule in 1919, we've been manufacturing top-quality tools, like this rule which features a 6' maximum extension, clear graduation markings, and a brick mason scale on the inside.