Apollo CSM Propellant Electrical Control Unit used to regulate a meter indicating the amounts of oxidizer and fuel in the spacecraft's propellant tanks, manufactured by Simmonds Precision Products, measuring 13.25″ x 12.5″ x 5.75″, marked on the side: "Control Unit, N.A.A. Control No. ME 480-0008-0021, Contract No. NAS 9-150, Serial No. 08275PCU 7060." In very good to fine condition.
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