Sumerians used measured quantity of barley as money.
苏美尔人使用称量的大麦作为货币。
TED演讲（视频版） 2022年4月合集
I found that in 2500 BC, Mesopotamia, Sumerians used measured quantity of barley as money.
我发现在公元前 2500 年的美索不达米亚，苏美尔人使用定量的大麦作为货币。
英语百科
Measured quantity
In a physical setting a measurement instrument may be gauged to measuring substances of a specific physical quantity. In such a context the specific physical quantity is called a measured quantity.
The synonymous notion "observable" often is used in the context of quantum mechanics.