Atlas Launch Computer Ground Amplifier, measuring 9.5″ x 4″x 14.75″, marked at the top, "16-6H Dual D.C. Amplifier," with a US Air Force/Convair-Astronautics label affixed to the left side. The front panel has two balance knobs and buttons, and two overload balance indicators. The wiring is exposed on the sides, and the interior contains several vacuum tubes. In fine condition.