TBT-Z6 is manufactured according to the specifications of the American Petroleum Institute (API), and can measure various rheological parameters. At the same time, it can measure a series of technical parameters such as dynamic and static shear force, fluidity index and consistency coefficient. The operating principle of the machine is driven by the motor, and the drilling fluid sample is injected into the annular space between the float and the outer sleeve during measurement. The motor drives the rotor to connect the outer sleeve to rotate at a certain speed. The rotation of the outer sleeve in the sample will exert a certain torque on the float, and the rotation of the reaction force of the torsion spring is displayed on the dial. (1° rotation is equivalent to 3.68×10-5 N·m.) Calculate the final viscosity value through the formula.