1. (Chem.) See Soluble glass, under Glass. [ 1913 Webster ]
2. A clepsydra. [ Webster 1913 Suppl. ]
3. 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. [ Webster 1913 Suppl. ]
4. A water gauge for a steam boiler. [ Webster 1913 Suppl. ]
[のぞきめがね, nozokimegane](n) (1) (See 覗き機関・のぞきからくり) peep show; device with lens mounted on a stand or in a box to view enlarged pictures; (2) (See 箱眼鏡・はこめがね) water glass; hydroscope; box, etc. with glass bottom for viewing underwater[Add to Longdo]