If the sensitivity of bubble tube of a levelling instrument is 30" per – InterviewSolution

1.	If the sensitivity of bubble tube of a levelling instrument is 30" per 2 mm division, then the error in the staff reading on a staff held at a distance of 80 m caused by the bubble being 2 divisions out of the centre, will be
Answer» If the sensitivity of bubble tube of a levelling instrument is 30" per 2 mm division, then the error in the staff reading on a staff held at a distance of 80 m caused by the bubble being 2 divisions out of the centre, will be

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