History of the firmSpot GalvanometerThermo electric pyrometerPattern T metersPattern L meterSub standard Dynamometer AmmeterR W Paul Mains Test Set Pattern UThermionic Voltmeter Moullin valve voltmeter type ADecade Bridge
Thermionic Voltmeter Moullin valve voltmeter pattern C
Voltmeter Moullin valve voltmeter pattern D Cambridge and Paul Standard Resistor Decade Bridge Potentiometer Standard Resistors DC Range box AC Range box Constant Inductance Rheostat Galvanometer Shunt
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