Was looking through the big pile of paper Gazettes and found this one, that has a list of the primary standards in South Africa. Gazette 36486 dated 31 May 2013.
Interesting are the electrical master standards, which are quite complex.
Electricity
Electric potential: A 10 V Josephson Voltage Standard, No. ME-106/5.
Electric resistance: A series of eight Leeds and Northrup Type 4210 1R resistors,
Electric capacitance: A series of capacitors:
Four Andeen Hagerling Type AH1100 capacitors with nominal values from 1
pF to 100 pF.
Four General Radio Type 1409 capacitors with nominal values from 1 nF to 1
uF.
Two sets of Agilent Type 16380 capacitors, each set containing four
capacitors, with nominal values from 1 pF to 10 uF.
Electric inductance : A series of six type 1482 inductors with nominal values from
100 uH to 10 H.
Electric AC voltage: A series of four thermal converters (AC to DC):
Type MJTC 301.
Type MJTC 312 with 900 0 series resistor.
Type MJTC 308 with 10 kO series resistor.
Type MJTC 311 with 100 kO series resistor.
A Holt 12 low voltage thermal converter.
Electric AC current: A series of AC to DC thermal converters with current shunts:
Electric AC power: A Zera COM 3000 AC power comparator.
Radio-frequency power:
50 R measuring head, No. 50/01;
50 R, 0 dBm power sensor HP 8485A.
50 R, -30 dBm power sensor HP 8485D, No. 3318A02445;
75 R measuring head, No. 75/01;
75 R power sensor, HP 8483A.
50 R, 0 dBm power sensor R & S NRV-Z55.
50 R, 0 dBm power sensor Agilent 8487A.
50 R, -30 dBm power sensor Agilent 8487D.
Radio-frequency attenuation:
Attenuator model WBCO 310
Radio-frequency impedance:
A group of 50 R coaxial air-dielectric transmission lines:
Connector-type PC-7 mm.
Connector-type PC-3,5 mm.
Connector-type N-7 mm.
Connector-type K-2,92 mm.
Connector-type PC-2,4 mm.
And one I have traceable calibrations to.....
Mass
A cylinder of platinum-iridium, replica No. 56 of the international prototype of the kilogram
(IPK).
Plus a whole host of other standards, including for the time conscious the 4 Caesium beam atomic clocks, one HP, one Agilent and 2 Symmetricom units.
