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Machinists' level. A spirit level, bubble level or simply a level is an instrument designed to indicate whether a surface is horizontal (level) or vertical (plumb). Different types of spirit levels may be used by carpenters, stonemasons, bricklayers, other building trades workers, surveyors, millwrights and other metalworkers, and in some photographic or videographic work.

Machinists' Level

Machinists' level. A spirit level, bubble level or simply a level is an instrument designed to indicate…