3/18/2023 0 Comments Chalk line plumb bob![]() ![]() The plumb bob will eventually come to rest against the surface, creating a straight line from the nail to the plumb bob. Next, holding the string taut, allow the plumb bob to hang freely from the other end of the string. Then, tie one end of the chalk line string around the nail. To use a plumb bob to plumb a chalk line, first drive a small nail into the surface at the point where you want the chalk line to start. The most common method is to use a plumb bob.
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