the.com/plumb

Gravity's oldest employee, a string and a weight that never once lied about straight down.

means To be perfectly vertical, or to measure that verticality (with a weighted line); figuratively, to explore something to its full depth.

from From Latin 'plumbum,' meaning lead — the soft, heavy metal. A weight of lead tied to a string makes a 'plumb line,' the builder's truth-teller for vertical. The same root gives us 'plumber' (who once worked lead pipes) and the chemical symbol Pb. To 'plumb the depths' borrows the image of a lead weight dropped to sound how deep the water runs.

latin root
From plumbum, Latin for lead, the dangling weight
shared ancestry
Same root gives us plumber and plunge
means deep
To plumb depths is to measure them
plumb crazy
Plumb also means utterly, completely, dead-on
ancient tool
Egyptians used plumb bobs building the pyramids
for instance

bob plumb — english composer and organist (1846-1915) who wrote sacred music and anthems

plumb design — architecture and design firm founded by charles plumb in new zealand, known for residential and commercial work

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