It is suitable for studying effects with much shorter relaxation times than any other rheometer. The CaBER is a capillary breakup rheometer. Rheotens is a fiber spinning rheometer, suitable for polymeric melts. One such method is by using an acoustic rheometer. His thesis work included the design of a new less-compliant rheometer. Volume viscosity can be measured with an acoustic rheometer. A pressurized capillary rheometer can be used to design thermal treatments of fluid food. This type of rheometer works at much higher frequencies than others. The FiSER (filament stretching extensional rheometer) is based on the works by Sridhar et al. It is a new way of doing rheology, traditionally done using a rheometer. In rheology, an acoustic rheometer relies on the principle of ultrasound. Acoustic rheometer is one example of such devices. The word rheometer comes from the Greek, and means a device for measuring main flow. Thus, a rheometer can be considered as a special type of viscometer. To measure the elastic modulus of a system during curing, a rheometer can be used.