Plumb


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plumb

[pləm]
(engineering)
Pertaining to an object or structure in true vertical position as determined by a plumb bob.

Plumb

Any method of lining up the building elements in a true vertical direction.

Plumb

 

a device for centering a theodolite above marked points in the instrument leveling head or for elevating points when measuring the lengths of lines and angles. Plumbs include the plumb bob, a conical weight suspended on a string; the rigid plumb, a telescoping rod with a point at the end mounted perpendicularly to a level; and the optical plumb, a field glass whose collimator is also mounted perpendicularly to a level. Plumbs are also used in building construction, excavation work, and elsewhere.

plumb

Exactly vertical.
References in periodicals archive ?
Instead, Plumb eventually returned to school right before Christmas break and then started participating in light practices with the basketball team before making it back on the floor for games earlier this month.
All along, I figured that depending on how I felt, that I could get back and play," Plumb said.
It's been a remarkable recovery for Plumb, who first got sick at about Thanksgiving.
Even if there are no micro-Martians, adds Plumb, future Mars-landing missions should be instrumented to detect peroxonitrite and carbonate on the planet's surface, as well as to confirm a slight alkalinity that would account for the 22 percent carbon dioxide reabsorption reported by Viking.