Chalk line

Chalk lines were used in ancient Egypt, are mentioned in Homer's Illiad,[2] and have been used continuously by builders in various cultures since.

Continuing development of this simple-but-effective tool focuses on the coloration for the chalk or marking compound,[3] as well as the outer case and method of handling.

This is a silken cord, stored on a combined reel and inkpot which was invented by Chinese master craftsman Lu Ban.

[6] Upon the completion of a major building, a large celebration or topping-out ceremony is held.

As part of this event, a set of symbolic carpenter's tools are freshly made and presented to the new building.