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Engineering Gauges > Others > Plumb Bob [Model-3955]

Plumb Bob

SKU: Model - 3955
MATERIAL: BRASS
RANGE: -
LEASTCOUNT -
ACCURACY -
FINISH: LACQUER COATED
USES:

The plumb bob or plumb line employs the law of gravity to establish what is “plumb” (that is, what is exactly vertical, or true). You don’t have to be a physics whiz to understand that a string suspended with a weight at the bottom will be both vertical and perpendicular to any level plane through which it passes. ln a sense, the plumb bob is the vertical equivalent of the line level. The plumb consists of a specially designed weight and coarse string made of twisted cotton or nylon threads. (Masons prefer nylon because it stands up better over time to the dampness that comes with the trade.) At one end of the string the weight is affixed. Precisely machined and balanced bobs have pointed tips, and can be made of brass, steel.

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