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What is the height of instrument, if elevation of benchmark is 200.852 m, back sight is 2.324 m, fore sight is 1.836 m?

What is the height of instrument, if elevation of benchmark is 200.852 m, back sight is 2.324 m, fore sight is 1.836 m? Correct Answer 203.176

Height of instrument is obtained by adding the elevation of benchmark and back sight. Here, 201.852 + 2.324 = 203.176 m.

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