#water_gauge__watergauge__water_gage__watergage__waterglas  gauge for indicating the level of water in e.g. a tank or boiler or reservoir
  supertype:  gauge__gage  a measuring instrument for measuring and indicating a quantity or for testing conformity with a standard
  subtype:  water_level.water_gauge  a water gauge that shows the level by showing the surface of the water in a trough or U-shaped tube

No statement uses or specializes water_gauge; click here to add one.