QUESTION $4$

$4\mathrm{.}1.$ You have been appointed as a site engineer for a road project and the team surveyor is carrying out accuracy test for the level instrument that will be used on the project. Use the readings provided by your team surveyor to calculate the Collimation Error.

$(5)$

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$4\mathrm{.}2.$ Reduce the following levelling using the rise and fall method.

$(10)$

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