The following tacheometric observations were made from station A to stations 1 and 2.
The height of the instrument above the ground was 1.52 m. Take stadia interval factor and constant as 100 and 0, respectively. If the staff was inclined by 1° to the vertical, solve for the following:
a. Error in horizontal distance if the staff is inclined towards the
instrument for the line A-1.
b. Error in the vertical distance if the staff is inclined away from the
instrument for the line A-2.
c. If the elevation of point 1 is 115.673 m, determine the correct
elevation of point 2.
Extracted text: INSTRUMENT STAFF AT ZENITH ANGLE STAFF READING AT STATION Upper Middle Lower 1 96°55' 1.388 0.899 0.409 A. 2 122°18' 1.665 1.350 1.032