Apollo CM Block I Caution and Warning Indicator Panel, measuring approximately 5.25 x 3.5 x 25, with a label on the top reading, “Annunciator, Event, Master Caution, Type I, NAA/S&ID Control No. ME434-0020-1009, Grimes Matted and framedg. Co. S/N 10074 TSN 0010, Part No. 75-0056-21.” Some of the warning indicators read: “IMU Fail,” “G&N Error,” “Gbml Lock,” “S/M RCS B,” “AGC Pwr Fail,” “S/M RCS D,” and “O2 Press.” In very good condition, with some indicators missing. This panel would alert the crew to errors or malfunctions associated with the Guidance and Navigation System.
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