Used in pressure devices; an oval metal tube bent into a C-shaped arc with one closed end. When pressure is applied to the open end the tube tends to straighten which moves the closed end. The pointer is attached to this end.
Used in pressure devices; an oval metal tube bent into a C-shaped arc with one closed end. When pressure is applied to the open end the tube tends to straighten which moves the closed end. The pointer is attached to this end.