《明史·志·卷一》
正德十六年，执掌漏刻的博士朱裕又上疏说： 日晷、日表的尺寸不一样，难以准确测量，而推算历法用南京日出的分秒，似乎有矛盾。
正德十六年，漏刻博士朱裕复言： 晷表尺寸不一，难以准测，而推算历数用南京日出分秒，似相矛盾。
In the 16th year of Emperor Zhengde, Zhu Yu, a doctor in charge of the clepsydra, once again said in Shangshu: The sizes of the sundial and the sundial are different, and the problem is difficult to measure accurately. For example, there seems to be a contradiction in the use of minutes and seconds of Nanjing sunrise for calendar calculations.