Lufkin CN1291SF590 1/2-Inch x 33-Foot Oil Gauging Atlas Chrome Clad /Nubian Double Duty Tape 1/2-Inch x 33-Feet with black markings bonded to steel Recessed beneath multiple layers of nickel and chrome electroplating Provides greater resistance to wear and corrosion All tapes read right to left Heavy-duty frame designed for years of rugged use