LEVER MECHANISM OF A GAUGE FOR MEASURING PRESSURE DIFFERENCE

The chambers of cylinders 3 and 4, containing bellows 1 and 2, are connected to the spaces whose difference in pressure is to be measured. Cylinders 3 and 4 are joined by stem 5. Stem 5 is subject to the action of weight 7, transmitted through lever 6 which turns about fixed point A. Weight 7 develops the counterbalancing moment. The movement of stem 5 depends upon the difference in pressures in c…