A useful instrument for evaluating fibromyalgia and trigger-point tenderness is the doloriometer or algorimeter. This device consists of a force meter attached to a circular probe that is pressed against the skin until pain is experienced. If the reading of the force meter is 3.25 lb, and the diameter of the circular probe is 1.39 cm, what is the pressure applied to the skin? Give your answer in pascals.
A doloriometer/algorimeter used to evaluate pain threshold