Think of the stories this Masons bob could tell! From the Latin plumbum, this rare conical masons bob, has a pointed tip on the bottom and delta perforation at the top for suspension. Precisely cast and balanced using the lost wax method, such plumbum were suspended from a string and used as a vertical reference line, or plumb-line to ensure constructions were "plumb", ie: vertical and perpendicular to any level plane. Still in use today, surveyors sometimes use plumb bobs for lining up points or transferring them.
Condition: The plumbum is intact and in excellent condition overall, there are iron accretions near the point probably from burial near iron object(s). Included with museum quality custom mount (shown).
Dimensions: Height: 3 5/8 inches (9.2 cm) Weight: 10oz (290g).
Provenance: Private collection of C.K., United Kingdom, acquired prior to 1980's.