5 ESSENTIAL ELEMENTS FOR CONTOUR SURVEY IN BANGLADESH

Lastly, the tripod leg ought to be preset in a position where by equally the bubbles are roughly in the center in their operate.An isohyet or isohyetal line (from Historical Greek ὑετός (huetos) 'rain') is a line on a map signing up for factors of equivalent rainfall within a specified period of time. A map with isohyets is called an isohyet