Polyphase Instrument Company was founded in 1947 as a manufacturer of stress and strain gauge instruments, hence our name. Shortly thereafter, we entered into commercial magnetics as a supplier of pulse transformers to the fledgling computer
Spirit Avionics is a Columbus, OH-based company in the Manufacturing sector.
Firefly Aerospace is an American private aerospace firm based in Austin, Texas, that develops small and medium-sized launch vehicles for commercial launches to orbit.
Lake Engineering Inc is a Long Lake, MN-based company in the Manufacturing sector.
Dass Aero Engine Services is a Arlington, TX-based company in the Manufacturing sector.