In 1888 he formed the Weston Electrical Instrument Corporation which would become famous for its voltmeters , ammeters , wattmeters , ohmmeters , frequency meters , transformers , and transducers .
In 1888 , he formed the Weston Electrical Instrument Corporation which was known for its voltmeters , ammeters , wattmeters , ohmmeters , frequency meters , transformers , and transducers .