Strumento per la misurazione delle profondità, del tipo a membrana

摘要

A depth-measuring instrument of the membrane type has a metallic disc membrane deformations of which are recorded by a pointer on a scale. The disc is flat and is freely supported at its edge on a seat on which it is movable when it flexes, and is covered by a flexible wall of an outer case so that ambient pressure is transmitted to the disc through this wall.