Wavemeters D N1 MK II CAT ZA 17469. Metal case. 70% brown paint. Lid marked Wavemeters D N1 MK II Cat ZA 17469. The locking hook is functional. All moving parts are functional. Instructions for use under the flap. Some wear and patina. Condition II+. Wavemeter D No. 1 Mk II Cat ZA 17469. Metal case with brown paint retained at approximately 70%. Lid marked accordingly, fastening hook functional. All moving parts functional. Instruction sheet present under flap. Showing some wear and patina. Condition II+.