Surveying
The cross hairs in the surveying telescope are placed

midway between eye piece and objec-tive lens
anywhere between eye-piece and objective lens
much closer to the eye-piece than to the objective lens
much closer to the objective lens than to the eye piece

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Surveying
Normal tension is that pull which

is used at the time of standardising the tape
neutralizes the effect due to pull and sag
makes the correction due to pull equal to zero
makes the correction due to sag equal to zero

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