5 SIMPLE TECHNIQUES FOR CONTOUR SURVEY IN DHAKA

Release the clamp screw from the instrument, hold the instrument in the correct hand, and deal with it around the tripod by rotating only the decreased portion with the still left hand. Tighten the screws from the instrument firmly.An isohyet or isohyetal line (from Historic Greek ὑετός (huetos) 'rain') can be a line on a map becoming a memb