Founded in 1945, Qualitrol Company is one of the leading companies that supplies transmission and distribution instruments and control and monitoring systems in the United States. It serves the electric, water, and oil and gas industries. The company offers gas accumulators and position indicators. Qualitrol Company provides load tap changer monitors and a variety of accessories. It also offers a range of equipment, such as annunciator, sequential events recorders and time synchronizers. The company provides fault location and recording equipment. Additionally, Qualitrol Company offers installation services for transformer asset protection equipment. It has received an ISO 9001:2000 certification from the International Organization for Standardization. The company is a subsidiary of Danaher Corporation.