Question

A level was set up mid way between two staffs A and B, which are 60m apart. The reading to A was 1.65 and to B was 1.48. The level was then moved 10m beyond A and readings of 1.47 made to A and 1.39 to B. Select the correct answer below.

A) The difference in height from A to B is +0.17m and the error in the level is +0.0013m/m. None of the above is correct.

B) The difference in height from A to B is +0.17m and the error in the level is -0.0015m/m.

C) The difference in height from A to B is +0.17m and the error in the level is +0.0015m/m.

D) The difference in height from A to B is -0.17m and the error in the level is +0.0015m/m.

E) The difference in height from A to B is -0.17m and the error in the level is +0.0013m/m.

Answer 1