In industrial water treatment applications where galvanic corrosion is a potential due to bimetallic construction, the application of sodium molybdate is preferred over sodium nitrite.
Television camera with mirror to see around, telescopic arm to dig small graben, and a bimetallic temperature-measuring instrument can be corresponded to them.
A bimetallic element obstructs or opens an opening in the body for retaining or releasing the object depending upon the temperature of the bimetallic element.
