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Question
If the staff reading at point A = ha and at a point B = hb. The correct staff reading should have been Ha and Hb, where Ha = ha – ha’ and Hb = hb – hb’ then the correction difference in elevation between A and B is given by ____________
Options:
A .  ha – hb – ha’ + hb’
B .  ha + hb + ha’ + hb’
C .  Ha – Hb + ha’ – hb’
D .  Ha + Hb
Answer: Option A
Answer: (a).ha – hb – ha’ + hb’

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