electrometrically
/ɪˌlɛktrə(ʊ)ˈmɛtrɪkli/Electricity and Chemistry
adverb
As regards measurement with an electrometer; by means of electrometry.
Origin
Late 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. Either from electrometric + -ally, or from electrometrical + -ly.