Definition of null instrument in English:

null instrument

Line breaks: null in¦stru|ment

Entry from British & World English dictionary

(also null indicator)

noun

An instrument used to measure an electrical quantity by adjusting known quantities in the circuit until a reading of zero is obtained.

Definition of null instrument in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day antebellum
Pronunciation: ˌantēˈbeləm
adjective
occurring or existing before a particular war…