Direct action contact analog electrical measuring instruments
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Direct action analog electrical
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System of product-quality indices. Analogue panel electrical measuring instruments. Nomenclature of indices
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Product-quality index system. Combination analogue electrical measuring instruments. Index nomenclature
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Direct acting indicating analogue electrical measuring instruments and their accessories. Part 4. Special requirements for frequency meters
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State system for ensuring the uniformity of measurements. Direct current electronic analogue voltmeters. Methods and means of calibration
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State system for ensuring the uniformity of measurements. Frequency meters. Methods and means for verification
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State system for ensuring the uniformity of measurements. Electronic analogue pulse voltmeters. Methods and means for verification
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Direct acting indicating analogue electrical measuring instruments and their accessories. Part 5. Special requirements for phase meters, power factor meters and synchroscopes
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Direct acting indicating analogue electrical measuring instruments and their accessories. Part 3. Special requirements for wattmeters and varmeters
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