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plumb rule

Syllabification: plumb rule

Definition of plumb rule in English:

noun

A plumb line attached to a board, used by builders and surveyors.
Example sentences
  • It is customary in laying blocks to use a plumb rule to ascertain the level alignment of the block which is being positioned on the wall.
  • It is used in a horizontal position as a level and in a vertical position as a plumb rule.

Definition of plumb rule in:

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