Stack of eight white programmer modules, part of the Gemini Digital Guidance system, measuring 9.25″ x 12″ x 8.5″, each marked with part numbers, for example: "D918319-1BMM, SNJ24C, C10838 E." All have connector ports on the side, and three have plates covering ports marked "X Pre Adj," "Y Pre Adj," and "Z Pre Adj." Unlike its Mercury predecessor, the Gemini spacecraft was capable of modifying its orbit, for which it required an on-board inertial platform and digital computer. A nearly identical example, that flew onboard Gemini 3, is retained within the National Air and Space Museum's collection. The only Gemini electronics this extensive that has been consigned to RR Auction.
