The moving coil galvanometer is practically immune to ambient magnetic fields.
2.
Moving coil galvanometer was developed independently by Marcel Deprez and Jacques-Ars�ne d'Arsonval about 1880.
3.
A moving coil galvanometer can be used as a voltmeter by inserting a resistor in series with the instrument.
4.
My first Multimeter was an analogue machine-moving coil galvanometer etc . I was excitedly measuring everything I could find, including the resistances of all my electrical appliances and the mains output ( 240 V ).