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 and slightly forward showing the twin rudders, propellers and aft A brackets. Two men in overalls are holding scale sticks, one showing the distance between the cone of the starboard propeller and the leading edge of the starboard rudder and the other showing the height of the rudder.