SURVEYING QUIZ

vertical circle is to its right and the bubble of the telescope is down

vertical circle is to its left and the bubble of the telescope is down

vertical circle is to its right and the bubble of the telescope is up

vertical circle is to its left and the bubble of the telescope is up

Main station

Satellite station

Pivot station

Subsidiary station

±2 mm

±3 mm

±8 mm

±5 mm

All listed here

Negative for points below datum

Zero for points vertically below the air station

Positive for points above datum

all involve equal measurement on the ground

method of oblique offsets

method of ties

method of perpendicular offsets

Horizon and equator

Zenith and pole

Pole and horizon

Equator and zenith

All listed here

The direction of the vertical, the axis of rotation of the instrument

The direction of the star from the instrument

The direction of the poles of the celestial sphere

outside of one handle to inside of other handle

outside of one handle to outside of other handle

inside of one handle to inside of other handle

centre of one handle to centre of other handle

All listed here

Is suitable for large areas with less control

Is prepared, by graphical method

Is rapid and accurate

Transition curve

Vertical curve

Reverse curve

Compound curve