So, I was looking into the interwar designs of some navies.
I noticed that they have a number of them - like Argentine cruisers or Finnish coastal defense ships - carries medium-caliber DP i.e. heavy AA guns, mostly around 3-4 inches.
Now I wonder what kind of fire control they have for those guns
I can't find any information on their AA director nor associated systems...but I feel that it's very unlikely that the major powers would be happy to supply those to them.
I mean, even immediately prior to the war, Brits' HACS/FKC were perhaps most common state of the art equipment, US just introduced Mk37 and its computer following the Mk33, KM did have a number of directors for 88 but I'm not sure if they provide automatic gun laying on anything but capital ships, Japan doesn't even have dedicated ones until late in the war...I don't know about Italian ships.
If there was no HA/AA director let alone computerized/automatic one, I wonder how did they set fuzes or achieve barrage fires?? Using the surface-fire rangefinder? Did Japan originally fire theirs like that too?