GAUGE CYLINDER ASSEMBLY FOR POSITION INDICATOR AND INDICATOR SYSTEM INCLUDING SUCH CYLINDER

摘要

A volumetric gauge cylinder for a position indicator comprising a closed cylinder having connections for pressure fluid at its ends. A non-rotatable axially movable piston is capable of movement within the cylinder under the fluid pressure, and a rotatable spindle extends along the length of the cylinder and has a helical external configuration cooperating with, and forming a sealed fit with a correspondingly shaped opening in the piston so that linear movement of the piston is translated into rotary movement of the spindle. The spindle is operationally connected to an external indicator which is caused to rotate in accordance with movement of the spindle.