R.A.F. Station Operations Room Table Plotter \'6+\
Small metal \'counter\' with number \"6+\" marked on representing the level of enemy aircraft. Together with other markers indicating the height of the aircraft these were mounted on wooden blocks and pushed about the plotting table of \'Ops\' room by WAAFs. Approx. 3 x 2.5cms in size. Found at West Malling some years ago. Very good used. Stock code M13702.