After the Pan and his son rested, they began to process the stone the next day.

There were samples made of mud for comparison, and no problems occurred during the polishing process.

In the middle, the angles of the sundial plate and the base were drawn by Ye Qing holding a ruler and an ink bucket.

round?

No compass?

Just nail two nails to the ruler!

What's more, people of this era have long invented a simple tool like a compass.

There is no problem with the dial engraving of the dial. The only problem is the hole in the middle of the dial to install the copper rod dial.

When Ye Qing saw Pan and his son holding a thin bamboo tube and rotating the holes in the place where the holes needed to be drilled on the sundial plate, he was shocked again!

Drilling holes with bamboo tubes in stone?

When will this be drilled?
Chapter completed!