دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a graduated rod, usually of metal, to which water-finding paper or paste can be applied. This paste or paper discolors on contact with water and thus affords a ready means of measuring the depth of water in a tank. Also called a waterfinding rule.

n: a strip of paper coated with a chemical substance that changes color on immersion in water. When fastened to a water finder, it indicates the depth of free water in a container.

n: a paste containing a chemical that changes color in contact with water. When applied to a water finder, it indicates the level of free water in a container. water-finding rule n: see water finder.