Water glass

Webster's Dictionary of the English Language

·add. ·- A water gauge for a steam boiler.

II. Water glass ·add. ·- A Clepsydra.

III. Water glass ·- ·see Soluble glass, under Glass.

IV. Water glass ·add. ·- An instrument consisting of an open box or tube with a glass bottom, used for examining objects in the water, as upon the sea bottom in shallow places.

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