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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
AC resistance: real component. Fixed resistor, 1 to 10000
Relative expanded uncertainty (k = 2, level of confidence 95 %) in µ/: 0.5 to 50
Coaxial ratio bridge
Frequency range: 40 Hz to 20 kHz
Maximum power dissipation: 1 mW
Approved on 06 August 2013
Internal NMI service identifier: 33
Uncertainty table