A horizontal collimation test is performed on an automatic level. With the instrument setup at point. 1, the rod reading at A was 5,221 ft, and to Bit was 5.533 ft. After moving and leveling the instrument at point 2, the rod reading to A was 4.950 ft and to B was 5.116 ft. The distance between the points in the test was 100 ft. What is the collimation error of the instrument? Express your answer to three significant figures and include the appropriate units. 6= Submit Part B HA Value Request Answer Units Correct reading to A What is the corrected reading to A from point 2? Express your answer to four significant figures and include the appropriate units. μA P Value Units

In tacheometry survey, an intercept of 0.755m was recorded on a staff which was believed to vertical, and the vertical angle measured on the theodolite was +15º. Actually, the staff which was 4 metres long was 0.14m out of plumb bob and leaning backwards away from the instrument position. Assuming it was an anallatic instrument with a multiplying constant of 100, what would have been the error in the computed horizontal distance?