Perpendicular
Of cord. May also be referred to as plumb line.
A cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point.
This concept's ID is @1~21681
Contains
- lead line
(nautical) plumb line for determining depth.
- plumb bob
The metal bob of a plumb line.
- plumb rule
A plumb line attached to a narrow board.