plumb bobs
Pointed hanging weights
Plumb bobs are weights, typically pointed and made of metal, suspended from a string to establish a true vertical line.
Builders, surveyors, and carpenters use them to ensure walls and posts are perfectly upright.
The name comes from the Latin word for lead, the traditional material.
He checked the fence post with a plumb bob before setting it in concrete.
- pendulumSuspended swinging weight
- levelHorizontal or uniform position
- weightMeasure of heaviness
- lead weightDense metal counterbalance
- verticalityState of being upright
true vertical · Roman engineering · center of mass · dead center · alignment · gravity · bricklaying · chalk line · string · sinker · precision · medieval architecture · points · leads · masonry · survey marker · construction tools · building trades
- Workshop Suppliesrulers, measuring tape, levels, safety glasses, hard hats
- surveyingsurveyor, theodolite, land surveys, survey markers, triangulation
- Indus ValleyIndus Valley, citadel, drainage system, priest-king, Indus River
- surveying equipmenttheodolite, theodolites, transit, transits, tripod
- tool accessoriesdrill bits, router bits, saw blades, blades, batteries
plumb bobslevels
Heights or ranked stages
spirit levels · bubble levels · laser levels · water levels · straightedges
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