Apollo Ground Support PSA (Power Server Amplifier) Test Point Adapter designed and manufactured by AC Electronics Division GMC, measuring 15″ x 11″ x 6″, with five sections marked TB1-TB5 and each containing 49 multicolored ports. Additional knobs, switches, and ports marked "Pulse Probe," "Buffered Probe," "Direct Probe," and others related to power tests for the inertial subsystem (ISS), servo assembly, scanning telescope (SCT), sextant (SXT), and inertial rate integrating gyro (IRIG); the face bears an affixed "Apollo GSE Performance Verification" label with a performance date of February 10, 1975, and an expiration date of August 11, 1975, with label to upper section marked "TPA.2." The adapter features larger ports to sides and base, and top panel bears two latches and a NASA parts label: "Apollo Ground Support Equipment, ADPT, Test Point, P.S.A., Part No. 2900037-031, Serial No. AC 1, Cont. No. NAS 9-497." In very good to fine condition, with expected wear from use.
