e·lec·tro·dy·na·mom·e·ter 
(ĭ-lĕk′trō-dī′nə-mŏmĭ-tər)
(ĭ-lĕk′trō-dī′nə-mŏmĭ-tər)n.
An instrument that measures electric current by indicating the level of magnetic attraction or repulsion between a fixed and a movable coil, one of which carries the current to be measured.