The two gauge foundation in the conning tower had no gauges when Pampanito became a museum (the brass instrument holder is original). We believe the left side with the brass instrument holder held a barometer/manometer like the one on the dive station. The diameter of the brass bracket is 4-1/2 inches. Our best guess was that there was a Mk 1 Deck Clock on the right. However, it might have been a thermometer.
The barometer installed today (in the photo above) is probably not the correct type. It was probably the same as the one on the dive station.