PLUMBBOB
Plumb bob
A plumb-bob or a plummet is a weight, usually with a pointed tip on the bottom, that is suspended from a string and used as a vertical reference line, or plumb-line. It is essentially the y-axis equivalent of a "water level".The above text is a snippet from Wikipedia: Plumb bob
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plumb bob
Noun
- A metal weight attached to the end of a plumb line.
The above text is a snippet from Wiktionary: plumb bob
and as such is available under the Creative Commons Attribution/Share-Alike License.