Dresser Model 5 Roots® Provers Model 5 Transfer Provers feature an integrated computer controlled system for verification and testing of rotary, diaphragm, and turbine gas meters. After the field meter is connected to the Prover and the test sequence is selected, the remainder of the operation ...
During WW II, Roots supplied Navy submarines and large surface craft with a special screw compressor used for ballast blowing. In 1944, Dresser Industries, Inc. acquired Roots to expand its range of services for the gas and oil industries. In 1990 Roots acquired Peabody Holmes and its plant ...