Thesaurus
Term:
plumb lines
Cords, strings, or other lines which, when used in conjunction with plumb bobs suspended from one end, are used to determine verticality or to aid in locating points on the ground during surveying.
Cords, strings, or other lines which, when used in conjunction with plumb bobs suspended from one end, are used to determine verticality or to aid in locating points on the ground during surveying.