The County class guided missile destroyer London (1961) in a dry dock at the Neptune Works of Swan, Hunter & Wigham Richardson Ltd at Wallsend-on-Tyne. The photographer is standing on the floor of the dock looking to port showing the starboard propeller shaft forward 'A' bracket between 166 and 167 stations. A man in overalls is sitting on the shaft holding a scale stick along the 'A' bracket while another man is standing on the floor of the dock holding a long scale stick against the ship's hull.