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Electronic hearing aids. General specifications
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Electronic hearing aids. General specifications
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Man-made noise radio interference measuring apparatus. Technical requirements
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Instruments for measurement of wow rate, speed oscillation and extraneous amplitude modulation factors, and speed drift for sound recording and reproduction equipment
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Frequency characteristics meters and generators of fluctuating frequency. Control methods
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Connectors of microwave channels of radiomeasuring apparatus. Connecting dimensions
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Radiation detectors. Terms and definitions
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Radiation detectors. Terms and definitions
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Cups and planchets for radioactive samples. Design and marking
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Scintillation detector units of ionizing radiation. Basic dimensions
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