The difference between the last reduced level and the first reduced level is equal to _______.

Difference between the sum of back sights and fore sights

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Difference between the sum of back sights and height of instrument

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Difference between the sum of back sights and intermediate sights

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Difference between the sum of back sights and reduced level of benchmark.

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Solution

The correct option is A Difference between the sum of back sights and fore sights
Arithmetic Check :

$\sum B . S = \sum F . S = \sum R i s e - \sum F a l l = L a s t R . L - F i r s t R . L .$

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Similar questions

Q. The following measurements were made during testing a levelling instrument.

P_{1} = 2.800

P_{2} = 2.700

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Q_{2} = 1.800

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then the reduced level of Q is

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Staff reading at P(in m)	1.824	0.928
Staff reading at Q (in m)	2.748	1.606

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The difference between the last reduced level and the first reduced level is equal to _______.

The correct option is A Difference between the sum of back sights and fore sightsArithmetic Check : ∑B.S=∑F.S=∑Rise−∑Fall=Last R.L−First R.L.

The correct option is A Difference between the sum of back sights and fore sights
Arithmetic Check :

$\sum B . S = \sum F . S = \sum R i s e - \sum F a l l = L a s t R . L - F i r s t R . L .$