Consider the following operations in a spire test :1. Depress telescope and sight a point on the ground nearer to the instrument2. Clamp horizontal plates3. Sight a well defined high point on a high building4. Change face and repeat the procedure.The correct sequence of these operations is

Consider the following operations in a spire test :1. Depress telescop

1.	Consider the following operations in a spire test :1. Depress telescope and sight a point on the ground nearer to the instrument2. Clamp horizontal plates3. Sight a well defined high point on a high building4. Change face and repeat the procedure.The correct sequence of these operations is
A.	1, 2, 3, 4
B.	3, 1, 2, 4
C.	3, 2, 1, 4
D.	2, 1, 3, 4
Answer» D. 2, 1, 3, 4

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Consider the following operations in a spire test :1. Depress telescope and sight a point on the ground nearer to the instrument2. Clamp horizontal plates3. Sight a well defined high point on a high building4. Change face and repeat the procedure.The correct sequence of these operations is

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