I kneeled down, and they raised a ladder from the ground to my neck; upon this ladder one of them mounted, and let fall a plumb-line from my collar to the floor, which just answered the length of my coat: but my waist and arms I measured myself.
There are no more uses of "plumb line" in the book.
Show samples from other sources
used a plumb line to lay the tile
He turned back and pushed open the door of my room, which had swung shut in the wake of my hasty exit, owing to the fact that the builder had apparently constructed the inn without benefit of a plumb line.