Surveying
The allowable length of an offset depends upon the

method of setting out the perpendiculars and nature of ground
degree of accuracy required
scale of plotting
All of these

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Surveying
Pick up the incorrect statement from the following. In a spherical triangle

Sum of any two sides is greater than the third
Every angle is less than two right angles
Sum of the three angles is equal to two right angles
Sum of the three angles less than six right angles and greater than two right angles

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Surveying
The rise and fall method

is less accurate than height of instrument method
provides a check on the reduction of intermediate point levels
is not suitable for levelling with tilting levels
quicker and less tedious for large number of intermediate sights

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