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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
AC resistance: time constant. Fixed resistor, 1 ns to 500 ns
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in ns: 10
Coaxial ratio bridge
Resistance range: 1 to 10 k
Frequency range: 40 Hz to 10 kHz
Approved on 06 August 2013
Internal NMI service identifier: 65