The D'Arsonval movement is earlier and introduced the central iron core, which produces the radial linear magnetic field across the pole gap that is the key to a linear response. Weston introduced the mechanical improvements of pivot bearings, hairsprings and a conductive damping ring. Almost all instruments are of the Weston pattern, although both names are widely used.
Media in category "D'Arsonval galvanometers"
The following 9 files are in this category, out of 9 total.