(under subclass 2) Subject matter wherein the strain gauge is secured to or otherwise mechanically linked with a diaphragm, bellows, piston, or other device which is adapted to move or deform by a compresses fluid or gas acting thereon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
36+, for mechanically variable resistors generally with a fluid or gas pressure sensing actuator.
SEE OR SEARCH CLASS
73, Measuring and Testing,
720, and 726 for fluid pressure gauges of the current generating or modifying type.
324, Electricity: Measuring and Testing, 106+, for electrical time and speed measuring.
