Apollo Command Module Pyrotechnic Test Set made by the Key Instrument Co., measuring 15.5 x 10.5 x 10 and weighing approximately 17 pounds, with battery compartment plate listing part numbers: "Pyrotechnic Test Set, Model 67-51 MOD 1, Serial 020-004." The face features two window meters for "Squib Resistance Tester" and "Stray Voltage Tester," as well as knobs and switches for "Meter Range," "Squib Selector," "Test Selector," "OHMS Vernier," and "OHMS Adj." The face also bears a NASA/KSC label marked "CAL/CERT Z58668," and a parts label for "Test Set." The top of the latched cover features a yellow label annotated as "ME432-0186-0001, Pyro Test Set, S/n 020-004, 9000-1549," and a "Notice of Integrity Control" label from North American Rockwell Break & Entry Control.
