The gauge on the left is for compartment pressure and reads 0-600 foot,
0-266.29 lbs. It just has a hole at the bottom with no nipple for a gauge line.
We need one pair for the after torpedo room, and an identical pair for the conning tower. We would also like to find a third set for use in the USS Roncador conning tower.
If we found the correct gauge bodies we could replicate the needed dials (faces).
We also need the sea and purge valves for both after torpedo room and conning tower.