Interchange Rolls of Perforated Tape for Information Interchange* (Proposed American National Standard) CACM January, 1970 interchange, rolls, perforated tape, tape, information interchange, directional markers, leaders, trailers, roll-up tape, 9-track paper tape, dimensions 3.70 6.33 6.34 6.35 6.36 CA700115 JB February 14, 1978 1:14 PM 2116 5 2116 2116 5 2116 2116 5 2116