Ordnance provision system. Ordnance catalog (ordnance provision system): Group F, Periscopes, telescopes for periscopes, and direct sighting telescopes for use in tanks, major items, maintenance parts and eouipment required for maintenance of periscope. M3. periscope, M4, periscope, M5, periscope, M6, telescone. M19A1, telescope, M21A1, telescope, M32A1. telescope, M38, telescope, M39, telescope, M40, telescope, M41, telescope, M43. telescope. M45, telescope. M47. telescope. M51. addendum: Dec. 21, 1042.