noun, noun or participle which takes 'suru', transitive verb
eye measurement; measuring by eye
Refers to estimating distance, size, or quantity by sight without instruments. Often used as a suru-verb (目測する) or in compounds like 目測で.
距離を目測で判断するのは難しい。
It's difficult to judge distance by eye measurement.
彼は川幅を目測して、
He measured the width of the river by eye and considered whether he could jump across.