The 6mm x 2m Executive Diameter Pocket Tape (Millimeters) by Lufkin (W606PM) is an ideal tool for measuring pipes, cables, tires and more, especially if you need to know the metric measurement for them. This double sided tape has the Zero or start tick at the same spot on both sides of the tape. The tape shows consecutive centimeters to millimeters on one side and diameter to millimeters on the other side. You can also get the conversion from diameter to circumference by simply turning the blade.