Open Wire Transposition Systems
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Illustrates and explains the need for transpositions, how they improve communication and the construction of various types of physical or single-point transpositions.
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Sources
- A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
- 16mm Filmography (legacy record) — catalog record
- usgov-av-1974 — title, year, creator, length, color, sound, description
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