The tape is carbon steel which has accurate calibration and strong resistance The oil gauge is suitable for measuring the depth of oil in vessels such as tankers and tanks, or for measuring the depth of water at the bottom of vessels The oil guaging tape frame is aluminum profile With a new ABS design at the handle All metal anti-expansion and recycle tape is fast and smooth There are 3 different types, 10/15/20m, choosing based on your needs, Manufacturer: TENYELE