Effortlessly lock the tape with your fingertip! Has diameter on one side, and regular scale on the other. Magnetic back sticks to any ferrous metal surface, our choice of assorted colors. Light enough to carry all day in your pocket without weighing your pants down. 10ft x 0.5in round tape measure with durable polycarbonate plastic case. 10" x 1/2" acrylic coated steel blade. Standard (feet/inches) scale on front and diameter scale on back. Plastic case with metal touch button.