"on what kind of yardstick is he basing his judgment?"
a ruler or tape that is three feet long
For everyday purpose, that standard object could be a yardstick or meter stick. 在日常实用中，标准物也许是码尺或米尺。
We shall use it as a yardstick in the following brief survey of the theories of static fatigue. 我们在下面的静态疲劳理论的主要研究中将用它作为一个衡量的尺度。
The right of a people to decide their own destiny, to make their way in freedom, is not to be measured by the yardstick of colour or degree of social development. 一个民族决定自己的命运，自由地走自己的路的权利，是不能用肤色或社会发展程度等尺度来衡量的。