Cole Instrument Corporation is one of the leading manufacturers of precision rotary switches optical encoders and potentiometers for the aerospace and military industries. The company has been operational for more than 35 years. Cole Instrument Corporation has a staff of more than 80 people and maintains a facility of over 24,000 square feet. Headquartered in Santa Ana, Calif., it is a small privately held business that uses the latest manufacturing and testing equipment. Cole Instrument Corporation produces a wide variety of precision rotary switches, and offers both optical and rotary encoders. The company has shipped more than 2.5 million switches into service.