**Rheometer** is a special device used to measure the rheological properties of liquids. These properties include viscosity, elasticity and other characteristics that determine how a liquid will behave when used. The rheometer is a very important tool in scientific research and production, as well as for other fields such as medicine and industry. In this article we will look at the operating principles of rheometers and their applications in various fields.
**Principle of operation**
Rheometers are based on measuring parameters characterizing flow and deformation