General Tools

General Tools & Instruments LLC was founded in New York City in 1922 by Abe and Lillian Rosenberg and began as a manufacturer of hardware and specialty hand tools. Over time Abe began to seek out designers and design himself more specialty tools to be manufactured by production partners eventually leading to the acquisition of Mannix Instruments and the subsequent production of electronic testing equipment. Today, General Tools produces high-quality digital tools inspired and fueled by the original entrepreneurial spirit that gave birth to the company almost 100 years ago. General Tools offers affordable tools and testers for Electrical, HVAC, Plumbing, and Industrial fields.