Echo Boxes TS-270/UP, TS-270A/UP and TS-270B/UP. TM 11-1068. TO 16-35TS220-5 technical manual tm (series) Flash ranging set AN/GTC-1 technical manual / department of the army Ordnance maintenance : Fuze setters M14, M22, M23, M25, and M27 tm Ordnance maintenance : telescope mounts M23, M28, M31, M32, M42, M46, M52C, M52D, M54 and M71, 1954 - Technical Manual TM 9-6101
