Navy Mark II sextant. This is a U. Navy Mark II sextant, manufactured by David White Co. Milwaukee, as indicated on the arc. The Mark II sextants were standard issue for naval navigation, widely used during and after World War II. Your example includes: The original fitted wooden case, with hardware and closure hooks intact. Telescope and accessories in their compartments. Calibration or adjustment card inside the lid. Serial number plate on the case No. The sextant appears complete and in good cosmetic condition, with clear markings on the arc and drum. The box shows typical wear for its age but retains its functionality and character. L 11.25″ x W 11.25″ x H 5.6. Manufactured by David White Co. The Mark II sextants were standard issue for naval navigation, widely uséd during and after World War II. The original fitted wooden case, with hardware and closure hooks intact. Our items are available for pick-up. No additional information at this time. You might also like. USS Sea Lion (SS-195) Submarine. French Naval Cutlass, model 1803. USS Greenfish (SS-351) Submarine. USS Steelhead (SS-280) Submarine.