Session 4 · Hour 1 · How high the liquid stands

1. Hour 1How high the liquid stands
2. Hour 2Head is a height
3. Hour 3Kinds of glass
4. Hour 4Walk to the wet line

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Level is a height. Not a feeling in the tank.

CheckBelieve the wet line. Then the taps. Name sight glass, DP, float, and radar as kinds.