Surveying
Which of the following methods of offsets involves less measurement on the ground?

method of oblique offsets
method of perpendicular offsets
method of ties
all involve equal measurement on the ground

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Surveying
The difference between a level line and a horizontal line is that

level line is a curved line while hori-zontal line is a straight line
both are same
level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line
horizontal line is normal to plumb line while level line may not be normal to the plumb line

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Surveying
A telescope is said to be inverted if its

vertical circle is to its right and the bubble of the telescope is up
vertical circle is to its left and the bubble of the telescope is up
vertical circle is to its left and the bubble of the telescope is down
vertical circle is to its right and the bubble of the telescope is down

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Surveying
Refraction correction

has no effect on curvature correction
adds to the curvature correction
completely eliminates curvature correction
partially eliminates curvature correction

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