Surveying
The slotted template method

Is rapid and accurate
Is prepared, by graphical method
Is suitable for large areas with less control
All listed here

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Surveying
Dumpy level is most suitable when

many readings are to be taken from a single setting of the instrument
All of these
the instrument is to be shifted frequently
fly levelling is being done over long distance

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Surveying
Circumpolar stars

Rotate round the North Pole
Remain always above the horizon
Rotate round the celestial pole
Are seldom seen near the pole star

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