A line P to Q is measured with instruments. The following readings are taken with the instrument. After measuring the point Q, the reading continues…

A line P to Q is measured with instruments. The following readings are taken with the instrument. After measuring the point Q, the reading continues to a B.M. of 84.500 m. Determine the RL of the readings by height of instrument method with necessary checks.

BS	IS	FS	RL	Remarks
1.433				P
1.150		1.725
2.240		0.985
1.785		1.360		Q
	2.063
1.645		1.120
0.875		2.215
		1.530	84.500	B.M.