Gramophones portable with spring mechanism. Specification
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Tape recorders. Cassettes for the winding of a ferromagnetic tape with a width of 6.35 mm. Basic dimensions Technical requirements
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Reels (cassettes) for winding magnetic tapes
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Tape recorders. A core (boss) for winding a ferromagnetic tape with a width of 6.35 mm. Basic dimensions Technical requirements
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Cores (lugs) for winding the magnetic tape
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Mechanical sound disk recording
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Mechanical sound disk recording
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Tape recorders. The main parameters
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Tape recorders. The main parameters
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Tapes for magnetic recording. Dimensions and methods of measurement
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Magnetic tape. Basic dimensions
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Measuring tapes (test films)
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