Theodolite Part 2 (23/05/25)

Establishing intermediate points on a straight line with both ends visible.

Establishing intermediate points on a straight line with both ends not visible.

Measuring the distance between two points using a tape.

Marking random points on a field in same line.

Axis of plate level parallel to trunnion axis

Line of collimation parallel horizontal axis

Horizontal axis perpendicular to vertical axis

All of these

Zero

Ninety

One hundred eighty

Forty-five

Horizontal line passes through the centre of the horizontal circle

Tangent to plate bubble must be perpendicular to horizontal axis

Tangent to plate bubble must be perpendicular to vertical axis

Vertical line passes through the centre of the vertical axis

Measuring magnetic bearing

Measuring true bearing

balacing in

Prolonging a line

0 to 90°

0 to 180°

0 to 270°

0 to 360°

Left

clockwise

Right

Any of these

(2n-4)90

(n-2)180

(n+4)90

(n+2)180

Included angle + deflection angle = 180°

Included angle + deflection angle = 90°

Included angle = deflection angle

Included angle - deflection angle = 180°

Ordinary method

Repetition method

Reiteration method

Reflection method

Instrumental error

Personal error

Natural error

None of these

To make the horizontal axis perpendicular to vertical axis

To make the line of sight and perpendicular to horizontal axis

To make the vertical circle indicate zero, when line of sight is perpendicular to the vertical axis

It is used to make the plate bubble central, when the vertical axis is truly vertical

Random line method

Balancing -in

Lining-in

None of the above

Parallel to axis of plate  levels

Parallel to vertical axis

Perpendicular to truninon axis

Parallel to horizontal axis