Apollo Saturn V Third Stage Pressure Adjustment Range Switch made by Nova-Netics Corp., measuring 3.5″ x 3.5″ x 2.75″, with a NASA George C. Marshall Space Flight Center plate at center: "Switch Press. Adj. Range, Assy. No. 8040-29…Contr. No. NAS7-101, Ser. No. 122, Date 4Q65." The central port is marked "J1" and the bracket bears inspection stamps.
