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level |
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level: see spirit level spirit level, tool for determining whether a surface is horizontal. It consists essentially of a slightly bent transparent tube that is held in a frame. The tube contains some alcohol, ether, or similar fluid but is not entirely filled, so that it also contains a ..... Click the link for more information. . levelDevice for establishing a horizontal plane. It consists of a small, sealed glass tube containing liquid and an air bubble; the tube is fixed horizontally in a block or frame with a smooth lower surface. When the bubble is in the middle of the glass tube, the device is on a level surface; adjustment to the horizontal is indicated by movement of the bubble. The glass tube is slightly bowed, and the level's sensitivity is proportional to the radius of curvature. |
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![]() Fouillée, Alfred Jules Emile Fould, Achille Foulfellow, J. Worthington Foulis, Andrew Foulois, Benjamin D. Foulques foundation foundation classes FOundation for Research and Technology - Hellas foundationalism founder founding foundling hospital ![]() |
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