ERF Electrical Wholesalers - In 1920, a British Post Office engineer, Donald Macadie, Invented the very first multimeter. He was frustrated that he needed to carry different tools when working on telecom
What is a multimeter? and history of discovering – Tools Bangladesh
Made in Japan Hioki 3030-10 Analog Multimeter Hitester - AliExpress
Digital Multimeter – Impulse
History of the Multimeter: Galvanometer to Digital Voltmeter | Fluke
History of the Multimeter: Galvanometer to Digital Voltmeter | Fluke
History of the Multimeter: Galvanometer to Digital Voltmeter | Fluke
BBC - A History of the World - Object : The AVO Multimeter