It is the most user friendly model for precise and rapid screening of small rodents for inflammation or edema of the paw. Normal tap water is enough to operate and with a handy design it automatically calibrates. A 360 reflex mirror facilitates the user to see the level of paw immersed with ease. Volume displacement measured in milliliters (ml) with the accuracy of 0.01 ml for both mice and rat. The digital display shows the measurement data and the software allows data collection and storage to a computer.