General"s professional quality Brass Plumb Bobs have been a staple of the masonry, carpentry and surveying industries for more than 50 years. Center less ground and balanced to precision tolerances, these lacquered and polished Plumb Bobs afford only the most exact plumb lines. The tool"s hardened steel point is accurate to within 1/100 and is easily replaceable. We offer seven distinct sizes of Plumb Bob, each of which conforms to U.S. government manufacturing specifications.