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still well

A device, used in evaporation pan measurements, that provides an undisturbed water surface and support for the hook gauge. The National Weather Service model consists of a brass cylinder, 8 in. High and 3. 5 in. In diameter, mounted over a hole in a triangular galvanized iron base that is provided with leveling screws.

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  • Kevin Bowles
  •  (Diamond) 9014 分数
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