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Plumb Bob by:Jaden and Austin
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What Plumb Bobs are used for
Plumb Bobs are used in conjunction with the measuring tape while mapping in order to provide a precise location for any feature boundary or artifacts that may be in the walls or floor of a unit.
How to use Plumb Bob
What is a Plumb Bob?
What is a Plumb Bob made out of
To use the tool, the string is fixed at the point to be plumbed. The weight, or bob, is then allowed to swing freely.
A Plumb Bob is a pointed weight on the end of a string.Line levels are attached to the strings that are used to outline the units.
Being one of the oldest tools known to humankind, the Plumb Bob has been made out of a variety of materials over the millennia from stone to hardened steel.
When was the Plumb Bob invented
Steel Plumb Bob
Rusted Plumb Bob
More than 4000 years ago the Egyptians invented the Plumb Bob. They used it to establish vertical references that word indispensable in the construction of there buildings, pyramids, and canals.