१. Short offsets are measured with
- an ordinary chain
- an invar tap
- a metallic tape
- a steel tape
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२. Reciprocal levelling eliminates
- collimation error
- collimation, curvature and refraction error
- curvature and refractor error
- collimation and curvature error fully and refraction error partly
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३. The total no. of zeroes graduated on a surveyors compass is
- one
- two
- three
- four
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४. The method generally preferred to for contouring an undulating area is,
- chain surveying
- plane table surveying
- tacheometrical surveying
- compass surveying
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