Scale: Revell boxart states the kits' scale to be 1/490.  When compared to Navy plans, the models' true scale is close to 1/483.  These mounts are perfectly matched to your Revell kit.
 
Recommended for:
Revell 1/490 scale USS Pittsburgh CA-72 (1967 release)
Revell 1/490 scale USS Pittsburgh CA-72 (1971 release)
Revell 1/490 scale USS Los Angeles CA-135
 
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 Mk.37 director configuration appeared on ships built early-mid World War Two, up through 1944.

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Mk.37 directors were commonly installed on many classes of US Navy and US Coast Guard ships during World War II through the Cold War.  
 
This "square-back" Mk.37 director featured five observation hatches and three telescope port covers and had boxy extensions on the rear shield that enclosed equipment associated with the Mk.12 and Mk.22 radars.   Succeeding the earlier "angle-back" Mk.37 directors, many of these "square-back" Mk.37 directors were modified to a later "square-back" configuration that had a shielded position for the director captain.  During the Cold War, the directors were enlarged, receiving a very boxy-shaped housing.

Mk.37 Directors are known to have been carried by the following ships and classes but check your sources to know for sure which director type you need for your project:
USS Enterprise (CV-6)
USS Pennsylvania (rebuilt)
USS Maryland (rebuilt)
USS Nevada (rebuilt)
USS California (rebuilt)
USS Tennessee (rebuilt)
USS West Virginia (rebuilt)
Alaska class
Atlanta class
Baltimore class
Benson class
Buckley class
Butler class
Cleveland class
Essex class
Fletcher class
Garcia class
Gearing class
Gleaves class
Iowa class
Montana class
North Carolina class had "angle-backs" available separately
Sims class
South Dakota class
Sumner class
many others as well as various auxiliaries