The Ull Meter is easy to use and to integrate in a daily routine. It is designed to bring anywhere and fits into a purse, a toilet bag or the inner pocket of a jacket. The instrument has one button and an organic shape that fits in the palm of a hand, allowing easy application of manual pressure. The instrument turns off automatically after 30 seconds for simplicity in daily use and battery efficiency. It measures the sensitivity of a biological sensor on the chest bone dependant on the level of activity in the sympathetic nervous system. When the Ull Measure stays high stress has become negative with potential cognitive, psychological, social and physical dysfunctions. The Ull Meter is an instrument for anyone to use anywhere. It is a portable, objective measurement of your immediate stress level. It gives you concrete information about an abstract phenomenon, enabling you to know if if a stress reaction is positive or negative and thus handle your own mental and physical health.