Horizontal calibration method
1. Set the instrument between the two observation points of the telescopic tripod. First, open the tripod and adjust it to the appropriate height. Use visual inspection to keep the tripod head in a horizontal position to ensure the stability of the tripod. Then open the instrument box and connect the level to the tripod through the connecting screws.
2. Keep the horizontal line of sight of the instrument, let the circular leveling bubble be in the circular indexing circle through the foot screw, and then practice leveling with the instrument to ensure that the direction of bubble movement is the same as that of thumb movement.
3. aim the telescope at the target accurately. First, aim the telescope at the bright background in the distance and adjust the focal length of the eyepiece. Turn the screw to make the crosshair clear. Then loosen the reinforcing screw and turn the telescope so that the joint between the camera door and the sight faces the leveling rod. Finally, tighten the reinforcing screws.
Matters needing attention in using level meter
1, check and proofread before actual operation to ensure the accuracy of measured data.
2, fixed frame head and tripod, be sure to ensure firm.
3. If the distance of the measuring surface is parallel to the surface, the level meter shall be prevented from being broken by collision.
4, take the level reading, be sure to ensure its accuracy, need to avoid parallax.
5, when using the spirit level, must ensure that its rotation point is firm, can be stamped.
6, when using the level, to ensure that the line of sight within 100 meters, and keep the same length before and after the line of sight.
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