Looking closely and blowing the picture up there's a bloody great quadrant on the LHS - with a handle. That's clearly the main use of the pilots left hand at some point whilst he flies the plane with his right. Something important is being rotated methinks.
Much of yesterday was spent looking at swing wings and rotating wings a la Osprey and rotating engines or nozzles - its not a UK or USA, doesn't look Russian, I don' think the French rotated anything but the Germans did
Thus I meandered to the VJ101 - I can remember some early footage way back.