Whose invention is the inkwell?

Legend has it that Lu Ban was a famous craftsman and inventor in ancient China, who invented the Lu Ban ruler, the saw, and some mechanical birds that could fly in the sky.

After about 450 B.C., he came from Lu to the state of Chu to help it make weapons. He had created a ladder and was preparing to attack the state of Song. Mozi traveled thousands of miles, ten days and ten nights from Lu to Ying, the capital of Chu, and argued with Lu Ban and the king of Chu against each other, convincing the king of Chu to stop attacking Song.

The hand tools used by carpenters, such as drills, planes, shovels, curves, and ink buckets for scribing, are all said to have been invented by Lu Ban. And the invention of each tool was inspired by Lu Ban's production practice, after repeated research and testing.

Expanded Information:

The inkpot is a tool used by carpenters to flick the lines and is rumored to be invented by Lu Ban. The tool is a bucket-shaped box to store ink, and the cord is dyed from one end through the ink hole, with a small wooden hook at the end of the dyed cord, known as a "banmu", which is said to have been invented by Lu Ban's mother. The banshu is usually about one inch above the ground. After fixing it, the dyed cord is flicked toward the ground, and the site is then used as a standard for a straight line to the horizon.

Also, the bannister could be fixed at a high place, with the bucket hanging down, and the weight of the bucket was used as a force to flick the dyed string towards the wall, which was used as a straight line standard for the fa?ade. After the stonemason master to bucket line set collected down the shape of the rock, and then use other tools to do not want the part knocked off, in order to become the required square stone, feldspar and other shapes of stone.