Launch the clamp screw in the instrument, hold the instrument in the ideal hand, and resolve it to the tripod by rotating just the decreased portion with the still left hand. Tighten the screws from the instrument firmly. By examining the contours, meteorologists can discover areas of lower or superior https://contour-survey-in-dhaka48382.win-blog.com/12846285/the-definitive-guide-to-contour-survey