The bubble of Theodolite Level tube is inconsistent and centered in the direction of 180 degrees. It is used to measure whether the straight line is feasible

The bubble of Theodolite Level tube is inconsistent and centered in the direction of 180 degrees. It is used to measure whether the straight line is feasible

As long as the leveling pipe is perpendicular to the measuring line and relatively centered, that is, the vertical axis is perpendicular to the horizontal axis, then it is no problem. When measuring, lock it horizontally

When the level gauge is placed on the measuring station, after reading the rear-view reading and rotating the telescope to aim at the front-view ruler, it is found that the round level bubble deviates from the center. What should be done?

Do it this way
1. Level the level
2. Turn the level 180 degrees. At this time, if there is no problem with the level, the bubble is still centered. If the bubble is not centered, enter step 3
3. Adjust the three screws under the blister to offset the blister to the center by half
4. Level the level again
5. Repeat steps 2 to 4 until the level is level

What is the mistake of grand sky, vast sea and boundless art

"The sky is grand, the sea is vast, and art is boundless". The "grand" in the advertising language should be changed to "vast" or "vast" and "vast"

Tell me the color of the sky ………………

The color of the sky··
Light blue
Give me points

The color of the sea is the same as that of the sky, Use the sentence pattern of the same. As The sea is the same color as the sky. It's blue.

The sea has the same colour as the sky ,it is blue .
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How many colors are there in the sky?

Usual: white, blue, cloudy: black, gray, Caixia: red, orange... Caixia has too many colors to say