Lufkin W606PD 1/4-Inch by 6-Foot Executive Diameter Engineer's Tape

Yellow clad blade has markings on both sides - consecutive inches to 1/16ths on one side and diameter inches to 1/100ths on the other side. Zero falls in the same place on each side of the blade; conversion from diameter to circumference is made by simply turning the blade. Spring action returns blade to the case. Lufkin Executive Diameter Engineer's tape is designed for measuring diameters of pipe, cable, tires or any circular object. The polished chrome case is small enough to fit into any pocket, carry in a purse or briefcase.