Recent Examples of plumb bob from the Web
Accurate to within 1/4 of an inch per 100 feet of range, the kit comes with a tripod with quick-adjust legs, a heavy-duty 8-foot aluminum grade rod (feet-inches-eighths), a plumb bob, and a kit box to safeguard the laser during transport.
Cake pans, coffee pots, cash registers, and a white ElectroChef stove appeared amid scientific instruments such as steel calipers and a brass plumb bob.
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First Known Use of plumb bob
PLUMB BOB Defined for English Language Learners
Definition of plumb bob for English Language Learners
: a usually small, heavy object that is used to make a string or rope hang straight : the heavy object that is part of a plumb line
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