用...来衡量是measure sth by 还是measure sth with

两个不一样
1. sth is measured by sb 某人估计什么
The length is measured by a professional engineer.一个专业的工程师估计这个长度。

2. measure sth with sth 用什么估计什么
The teacher measures time with a stop watch.老师用秒表估计时间

by