Assignment $2$

Write short notes on the type of level instrument available.

The readings given in the table below were recorded in a levelling operation from Points $1$ to $10.$ Reduce the levels by the 'height of instrument' method and apply appropriate checks. Point $10$ was a benchmark with an elevation of $66\mathrm{.}374m.$ Determine the loop closure and adjust the calculated values of the levels by applying necessary corrections. Also, determine the mean gradient between points $1$ to $10.$