Ordnance provision system. Ordnance catalog (ordnance provision system): Group F. Setter, fuze, hand, M1913 (for 155 mm guns), setter, fuze, hand, M1913A1 (for 155 mm howitzers), setter, fuze, hand, M1913A2 (for 4.7″ gun), parts and equipment; May 15, 1941. [1941.] 9 p. il. (Standard nomenclature list F-127.)