In this study, a system is developed to measure intensity of human essential tremor in a qualitative manner. The system has a ring shape and contains a three-axis accelerometer, microcontroller and memory unit. Three-axis acceleration data is sampled at 30Hz and stored in 256Mbit flash memory. The system is able to run along one day using single 1000mAh capacity 3V battery. The data collected is transferred to computer using USB interface to convert it to qualitative value. One of the most important advantage of the system is its low-cost. Prototype of the system is developed up to now and patient test will be performed soon. © 2012 IEEE.