螺旋測微器

Simplified: 螺旋测微器

luóxuáncèwēiqì ㄌㄨㄛˊ ㄒㄩㄢˊ ㄘㄜˋ ㄨㄟ ㄑㄧˋ

    • micrometer screw gauge micrometer

Character by character

Sources