The carpenter checked the wall's vertical alignment using a plumb bob before installing the trim.

The surveyors hung two plumb bobs from the ceiling to check that the new support beams were perfectly vertical.

The mason used a plumb-bob to make sure the new wall was perfectly vertical.

The surveyors checked the plumb lines before beginning to install the masonry to ensure the walls would be perfectly vertical.

Her plumb crazy idea somehow fixed the problem.

They moved into a plumbingless cabin during the summer for a true back-to-nature experience.