Definition of 「硂」:
1. Ancient variant of “铨” (quán).
Literal meaning: balance or weigh.
Source: "Shuōwén Jiězì" states it as "铨".
Reference: In "Guǎngyǎ · Shì Qì", it is mentioned that if one does not accurately handle the weights of gold and silver, sage rulers do not utilize it, but instead utilize the balance for measurement.
Source: "Huái Nán Zǐ · Qí Sù Xùn".
2. Refers to texts of commentary and evaluation found in ancient historical texts, which could be called discussions, prefaces, balances, or critiques.
Source: Song Dynasty’s Zheng Qiao in "Tōng Zhì".