Two plumb-bobs made of metal with pointed ends. One features engraved markings "M.D. 3 P.10" while the other has a hexagonal top. Both include threaded sections for attachment.

Two plumb-bobs made of metal with pointed ends. One features engraved markings "M.D. 3 P.10" while the other has a hexagonal top. Both include threaded sections for attachment.