Ultimately, the tripod leg really should be set able where each the bubbles are around in the middle in their operate. When contours are used with hypsometric tints on a small-scale map that includes mountains and flatter minimal-lying regions, it's typical to possess smaller intervals at decrease elevations so that https://contoursurveyinbangladesh10493.blog-kids.com/32513996/not-known-details-about-contour-survey