👉 The tautometer is a device used in physics to measure pressure. It consists of two identical tubes, one at one end and the other at the other. The tube with the larger diameter is connected to the lower part of the tautometer and the one with the smaller diameter is connected to the upper part. When the pressure gauge is filled with water or an object that has a high density, the tautometer reads the difference between the pressures measured by the two tubes.
