Pressure Transmitter manufactured by Lion Research Corporation, probably associated with the Apollo Command Module, measuring 4″ x 5″ x 2″, marked on the top: "Name Transmitter, Pressure, S&ID Control No. ME 478-0031-0004…Mfr. Serial No. 188, Mfr. Part No. 100-4." The device has ports with red caps on either end. In fine condition.
