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Plumb bob

technology Maturity 7-9

A plumb bob is a heavy weight.

Plumb bob.jpg
Plumb bob.jpg
It hangs from a long string. It helps us find a straight line. This helps people build tall walls. It has been used for a long time. Can you find a straight line?

42 words
🖼️ Images & Media (5)
File:Plumb bob.jpg
Plumb bob.jpg
File:Cc&j-fig23--plumb rule.png
Cc&j-fig23--plumb rule.png
File:Cc&j-fig24--plumb square.png
Cc&j-fig24--plumb square.png
File:Lot hg.jpg
Lot hg.jpg
File:Plumb bob with string.jpg
Plumb bob with string.jpg
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📚 Content adapted from Wikipedia | Readability: FK 11.2 | Vital Level 5