Our Door Pressure Gauge shows the amount of force (pounds or kilograms) required to open doors so you can determine if the door meets A.D.A. regulations. An absolutely vital tool if working on doors in facilities requiring full access to disabled persons. It can also be used to determine the amount of rolling force required to open or close patio doors. Range is from 0 to 35 lbs. (0 to 15.9 kg).