strument, with poles located at right angles tothe poles formed by the yoke. Pivoted on a shaft in the cen-ter of this group of polesis a soft iron vane whichtakes up a position corre-sponding to the relativestrengths of the perma-nent and electro-magneticpoles. The shaft carriesthe usual pointer…
Automobiles · Aeronautics
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
