Abstract: A positive displacement flowmeter is provided having a body structure defining a flowmeter measurement chamber within which is rotatably supported a large primary gear rotor and a small secondary gear rotor that have rotor teeth intermeshing with one another and also establishing a limited dynamic flow path with respect to internal wall surface segments of the flowmeter measurement chamber. The flowmeter body defines inlet and outlet passages defining a common center-line that is off-center with respect to the flowmeter chamber and which is located between the axis of rotation of the primary rotor and the limited dynamic flow path that is defined within the housing. The essence of this flowmeter construction rests with the rugged, machined gear pair rotating against a limited dynamic seal path coupled with introducing the fluid stream at an off-center position in relation to the flowmeter body and rotor system.