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- Mason's plumb bob
Mason's plumb bob
ES
Emmanuel Sagini
Updated
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A plumb bob, plumb bob level, or plummet is a weight with a pointed tip on the bottom that is suspended from a string and used as a vertical reference line.
It is a forerunner of the spirit level and is used to establish a vertical reference. It is usually made of stone, wood, or lead, but it can be built of any metal. If it is intended for ornamentation, it could be made of bone or ivory.
The tool has been used since ancient Egypt to guarantee that constructions are "plumb," or vertical. It is also used in surveying to determine the nadir (opposite of the zenith) of a point in space in terms of gravity.
It is a forerunner of the spirit level and is used to establish a vertical reference. It is usually made of stone, wood, or lead, but it can be built of any metal. If it is intended for ornamentation, it could be made of bone or ivory.
The tool has been used since ancient Egypt to guarantee that constructions are "plumb," or vertical. It is also used in surveying to determine the nadir (opposite of the zenith) of a point in space in terms of gravity.
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| Plumb bob Kasongo near Ahero town, Kisumu County |
 | Product Masonry tools |
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