Surveying
Polaris is usually observed for the determination of the latitude when it is

Either at culmination or at elongation
At elongation
At culmination
Neither at culmination nor at elongation

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Surveying
The length of a chain is measured from

outside of one handle to inside of other handle
inside of one handle to inside of other handle
outside of one handle to outside of other handle
centre of one handle to centre of other handle

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