Full Title

Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements ( transmitting or indicating the displacement of mechanical pressure-sensitive elements by electric or magnetic means G01L9/00; measuring differences of two or more pressure values G01L13/00; measuring two or more pressure values simultaneously G01L15/00) > in the form of elastically-deformable gauges > in the form of flexible, deformable tubes, e.g. Bourdon gauges