The imaginary line passing through the intersection of cross hairs and optical center of the objective is known as
The imaginary line passing through the intersection of cross hairs and optical center of the objective is known as
کراس ہیئرز اور مقصد کے نظری مرکز کے چوراہے سے گزرنے والی خیالی لکیر کو کیا کہا جاتا ہے۔