A level is set up midway between two wood hubs that are about 300 ft. apart.  The rod reading on hub A is 9.57 ft.  The reading on hub B is 5.51 ft.  The level is moved so it is along the side of hub B and about 6 feet away from it.  Readings are taken from the new set up with the reading on hub A of 7.59 ft, and on hub B of 3.55 ft.

 

a.  what is the correct difference in elevation between the hubs A and B?

b.  If the level had been in perfect adjustment, what reading would have been observed at A from the second setup?

c.  what is the line of sight error in 300 ft?

Answer rating: 100% (QA)

To resolve this hassle we can first calculate the distinction in elevation between the 2 hubs A and ... View the full answer