In the course of this situation, a guide hand survey are unable to manufacture a correct map. Mainly because tapes and chains have lots of constraints and faults. That’s why the electronic survey in Bangladesh is available in handy. বিভাগ ৮ জোন সংখ্যা ১৮ জেলা ৬৪ উপজেলা/থানা ৪৯২ Road Networks https://sbscltd.com/land-survey-bd/