PLB stands for various terms. Discover the full forms, meanings, and possible interpretations of PLB across different fields and industries.
Sleeves that fit around drain and waste vent pipes at, and are nailed to, the roof sheeting. Vertical or perpendicular. A lead weight attached to a string. It is the tool used in determining plumb. Vertical or verticality, measured using a plumb-line or plumb-rule or these days a spirit level.
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