Apollo Leak Calibrator used to measure the leakage detectors of the pressurized system in the Command Module, measuring 8.5″ x 10.5″ x 4.25″, with a North American Aviation tag on the front, reading: "Calibrator Assy, Part No. 3639-740030-21, Ser No. F/S 6, Order No. Model A7-119." The unit features "Charge Valve" and "Supply Valve" adjustment knobs, a blue-capped "Charge Port," and "Supply Pressure" and "Leak Pressure" gauges, both with rated accuracy of plus or minus two percent. In fine condition.
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Terms and abbreviations used in our descriptions.