Question: Question 1 3 ( 6 points ) When using instruments in differential leveling, eliminating parallax error requiresFocusing the cross hairs for the eyepiece lens and

Question 13(6 points)
When using instruments in differential leveling, eliminating parallax error requiresFocusing the cross hairs for the eyepiece lens and focusing on the leveling rod for the objective lens
That the axis of the level vial and the line of sight must be parallel
Making sure that the horizontal cross hair is truly horizontal
That temperature and atmospheric pressure be determined while using the instrument
Question 1 3 ( 6 points ) When using instruments

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