Scientific apparatus and instruments in the field of rheology, namely, rheometers for measuring the viscosity and viscoelasticity of fluids, viscosimeters; measuring apparatus and instruments for the analysis of materials, namely, rheometers for measuring the viscosity and viscoelasticity of fluids, viscosimeters; monitoring apparatus and instruments, namely, rheometers for measuring the viscosity and viscoelasticity of fluids, viscosimeters; teaching apparatus and instruments in the field of...