• Background informationDIY

    What are the little black diamonds on roll-up tape measures for?

Measuring Tools

A spirit level or bubble 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, stone masons, bricklayers, other building trades workers, surveyors, millwrights and other metalworkers, and in some photographic or videographic work.