The US Navy Mark 37 Director was used to control the fire of the 5”/38 caliber dual purpose batteries against both aircraft and surface targets, to direct the fire of starshells for the illumination of surface targets and to position the searchlights. This late "Square-back" Mk.37 director featured a shielded position for the director captain.
These directors were commonly installed on many classes of US Navy and US Coast Guard ships during World War II. They carried Mk. 12/22 radars. It is believed that these "Square-back" directors included various modifications known as Mods 8 through 13 and 17. Some Essex class carriers carried a different style Mk.37 director seen on Cold War-era ships (click here). Please check your references to know which style your model needs.