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Artifact and Historical Materials


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  • Power Amplifier
    Power Amplifier
    Precise Comparison Method of Testing Alternating-Current Watthour Meters
    Precise Comparison Method of Testin...
    Precise Comparison Method of Testing Alternating-Current Watthour Meters
    Precise Comparison Method of Testin...
  • Programmable Winding Machine
    Programmable Winding Machine
    Quartz Tube Digital Pressure Gauge
    Quartz Tube Digital Pressure Gauge
    Reference Tables for Thermocouples
    Reference Tables for Thermocouples
  • Report of the National Research Laboratory of Metrology
    Report of the National Research Lab...
    Rotation device for taxi meter
    Rotation device for taxi meter
    Round trip test device
    Round trip test device
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