Computing machines. Alphanumeric codes for punched cards and punched tapes
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Tapes perforated for computers, data transmission equipment and telegraph apparatus. Shape, dimensions and position of holes
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Punched tape for computing technique, data transmitting equipment and teletypes. Shape, dimensions and position of holes
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Cards with edge perforation
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Computing machines. Magnetic tape. Form, dimensions and location of tracks
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Computing machines. Magnetic tape. Form, dimensions and location of tracks
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Punching cards. Specification
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Non-perforated magnetic tapes for sound recording
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Perforated magnetic tapes for sound recording
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Tapes magnetic perforated for sound recording. General specifications
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Gramophone measuring plates. General technical requirements
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