3) Describe the effects of the following malconstructions of the theodolite/total station, including diagrams and explain how the effects may be dealt with in practice to minimise errors in angular observations. i. Eccentricity of instrument centres ii. Imperfect graduations iii. Plate bubble maladjustment iv. Line of sight not perpendicular to trunnion (horizontal) axis v. Horizontal axis not perpendicular to vertical axis.

If you can help me with part b id greatly appreciate it, answer is not 10.77,10.72, 12.08, or 0.05. Thanks, will rate if answered within next couple hours.

Please help with b, i & ii The slope distance between two stations A and B measured with EDM when corrected for meteorological conditions and instrument constants, is 113.893 m. The heights of the instrument and reflector are 1.739 m and 1.839 m, respectively, above the ground. To measure the vertical angle a theodolite was set up at A, 1.665 m above the ground and a target at B having height above the ground as 1.632 m. The measured angle above the horizontal was + 4°22′18″. Determine a. The horizontal length of the line AB. b. To what precision the slope angle be measured: i. if the relative precision of the reduced horizontal distance is to be 1/100000. ii. if the reduced horizontal distance is to have a standard error of ± 1.8 mm.