 The secondary armament was primarily controlled by the 5 @.@ 5 @-@ inch directors mounted on each side of the bridge . They were supplemented by the two additional control positions in the fore @-@ top , which were provided with 9 @-@ foot ( 2 @.@ 7 m ) rangefinders . Each of these positions was equipped with a Dumaresq calculator for local control , but the spotting data were normally sent to the 5 @.@ 5 @-@ inch TS on the lower deck much like the procedure for the fifteen @-@ inch guns , except that the firing data were calculated by two Type F fire @-@ control clocks ( analog computers ) . The anti @-@ aircraft guns were controlled by a simple 2 @-@ metre ( 6 ft 7 in ) rangefinder mounted on the aft superstructure . 
