Chinese scientists have proposed that an object collected 35 years ago from a tomb of the Western Han Dynasty in Fuyang city and called “lacquerware of unknown names” could be a gnomon with template. Replica of the gnomon with template (Yunli Shi) In 1977, archaeologists unearthed a great number of precious relics, including the unknown object, in the tomb of Xiahou Zao (the 2nd century BCE), the 2nd Marquis of Ruyin of the Western Han...