Rota Rod Apparatus with Digital RPM Indicator is used for mice as well as rats and provides an easy way to test the motor function in rodents. The Rota Rod Apparatus helps to measure drugs administration, central nervous system damage or disease effects on motor coordination or fatigue by measuring the time during which the animal remains walks on a rotation drum. The Rota Rod Apparatus ensures easy replacement of the central rod for mice or for rat as per requirement. Rota Rod Apparatus with Digital RPM Indicator runs from the beginning of the test until the animal falls from the drum to the lane.