Instruments for Measuring, Recording, and Control of Viscosity, Consistency, Plasticity, Moisture, Temperature, Grindability and Extensibility for Use in Research and Development, Quality Control, [ Pilot Plants, ] and Production, namely, Rheometers, [ Viscometers, Rotational Viscosimeters, Integrating Rheometers, ] Torque Rheometers, Extrusion Rheometers, Plasticity Meters