old plumb bob, plummet or conical iron hanging with rope for measurement level,

lighting light iron streetlight jewellery circle yellow ceiling wood metal glass wing lamp branch tree tower line adjusting antique architecture background balance bob builder check construction cord craft craftsman efficiency engineering equipment gravity hanging heavy instrument isolated labor layer level masonry measure measurement nostalgic object old outside perpendicularly plumb plumbing plummet precise precision rope site steel straight string tool tools vertical vintage weight work worker working