eye gauge

• 放大镜

eye gauge的用法和样例：

例句

1. The wavy lines on the polished surface of jadeit jade are visiable to the naked eye or observation under magnification.
   通过肉眼和放大镜下观察，翡翠玉器的抛光表面一般都可见到微波状起伏，即微波纹。
2. The Coddington is essentially a sphere with a slot cut in it to allow an aperture smaller than the pupil of the eye.
   科丁顿放大镜实质上是一个球，球面上开槽，使得孔径小于眼的瞳孔。