SPIRITLEVEL
Spirit level
A spirit level or bubble level is an instrument designed to indicate whether a surface isThe above text is a snippet from Wikipedia: Spirit level
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spirit level
Noun
- A tool employing a chamber with a colored liquid (usually alcohol, hence spirit) and an air bubble, used to determine a horizontal or vertical reference line.
The above text is a snippet from Wiktionary: spirit level
and as such is available under the Creative Commons Attribution/Share-Alike License.