You are bidding on a Brand New "Knotmaster" Ship's Log Mark IIIA made by Thos. Walker & Son, Ltd, 58, Oxford Street, Birmingham, B5 5NX . This is a time-honoured device for measuring distance traveled. You tow one of the impellers behind the meter, which clamps onto the stern of the boat; as the impeller turns, it turns the meter (via its towing line) which clocks up the miles. The dials are (left, right, and main) tenths, units, and tens of nautical miles, up to 100 miles (presumably the navigator will remember to check it at least that often. or be thrown overboard). This log is 100% complete it comes with 2 starboard mounting shoe,s two spinners, 2 sinkers, two lines one oil feeder,extra spare clips and bracket. . This set has never been in the water and has got no corrosian from seawater. Carefull Shipping with track/trace