Delta Electrical Specialty Company (DESCO) was founded in 1956 and produced and sold the Circuitracer, a continuity/voltage tester. Desco Industries Inc. (DII) was founded in 1979 as the parent business. Desco, CMG, Desco Asia, EMIT, Menda, Protektive Pak, Smart Clock, Statguard Flooring, Charleswater, and Vermason are now part of DII. The same fundamental concept that was utilized in the original Circuitracer is still being produced today under the Menda brand.
