The 6"/47 and 8"/55RF both used Mk 34 directors, as did earlier 8" mounts. Here's the fwd. director on USS Salem, on the right of the picture:
The Mk 7 and 8 16" mounts all used Mk 38 directors, as shown on the right, in this picture of USS Washington:
![[ img ]](http://navsource.org/archives/01/056/015610a.jpg)