Viscometer

A viscometer (also called viscosimeter) is an instrument used to measure the viscosity and flow parameters of a fluid. The common Brookfield-type viscometer determines the required force for rotating a disk in the fluid at known speed. Other viscometer types use bubbles[?], balls or other objects. Viscometers that can measure fluids with high viscosity or molten polymers are usually called rheometer[?] or plastometer.