Virtual Labs

a: Spirit level b: Plumb bob c: Compass d: Theodolite

a: Coast survey table b: Wooden table c: Johnson table d: Traverse table

a: Levelling b: Transferring point to ground c: Sighting d: Drawing lines

a: Traversing b: Fore sighting c: Measuring bearings d: Back sighting

a: When approximate levelling is required b: When second point is available for orientation c: When it is not possible to set instrument over station mark d: When speed is important than accuracy

Study of plane table and its accessories.