Surveying
If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is

100.655 m
99.345 m
101.870 m
100.345 m

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Surveying
The prismatic compass and surveyor’s compass

both give QB of a line
both give QB of a line and WCB of a line
give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
both give WCB of a line

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