Manti Messenger | 1927-03-25 | Page 7 | New Thermionic Microammeter

New er I I t b S i c 4 rr y 1 erAa ww Yr v. v wh 1 K n ii 7 1 55 R I IA II I I o as A 1 tenth of a n thousandth of a millionth of or an ampere change lIu in current can ruu now be d detected b by the use of ot the an Instrument developed c ed edIn In the standardizing laboratory of ot the West Lynn works of ot the General Electric company as itS part of the equipment which replaces the human eye In making tests on Incandescent lumps lamps currents in Insulators radio tubes on nn other electrical appliances