Four items: first, a circular Acco Helicoid gauge, serial no. Z71190, 5.75″ in diameter, made by the Acco Helicoid Gauge Company. Gauge is calibrated from 0 to 6000, has a NASA/KSC label affixed to the face, and a NASA KSC Cleaned label, dated March 10, 1985, affixed to the glass cover. The two calibration seals on the reverse are intact. In fine condition. Second, a circular Safecase Master Test gauge, serial no. Z81747, 6.25″ in diameter, made by the Marsh Instrument Company. Gauge is calibrated from 0 to 6000, has a NASA/KSC label affixed to the face, and a NASA KSC Cleaned label, dated September 17, 1983, affixed to the glass cover. The two calibration seals on the reverse are worn, but remain intact. In fine condition. Third, a NASA rack component, 19 x 19, being a single drawer of a multi-drawer system which converted inputted individual communications channels and combined them onto a Microwave or Radio Frequency link between two ground stations. Component has an affixed label reading, “NAS 10-10792,” made by EMR, and has two removable circuits, and meters for the Sub-Carrier Level and Percentage Bandage. And fourth, a rack-mountable calibrator, circa 1970s-80s, 19 x 3.5 x 5, with four inputs and two knobs on the front. Service tag affixed to the top identifies the device as a “6625-NSL Calibrator.” This device was used to calibrate test equipment. Various scattered marks and adhesive remnants, otherwise fine condition.