Launch the clamp screw on the instrument, keep the instrument in the appropriate hand, and fix it within the tripod by rotating just the lower portion with the still left hand. Tighten the screws of your instrument firmly. In meteorology, the barometric pressures shown are minimized to sea stage, not https://charliejfaxq.blogthisbiz.com/38919521/5-essential-elements-for-contour-survey-in-bangladesh