CHAIN AND CROSS STAFF SURVEYING

The most important operation in chain survey is

• reconnaissance

• location of survey stations

• measurement of lines

• measurement of offsets

Each link in a metric chain is

• 15 cm

• 20 cm

• 25 cm

• 30 cm

It is the art of measuring slope, horizontal and vertical distances between the objects.

• chaining

• levelling

• surveying

• contouring

The total number of links available in 20 m chain is

• 100

• 200

• 300

• 400

The survey in which the curvature of earth is taken into account is called

• Hydrographic survey

• Preliminary survey

• Plane survey

• Geodetic survey

Each link in a Gunter's chain

• 0.33 ft

• 0.66 ft

• 1 ft

• 1.33 ft

Cross staff is used for

• Setting out right angles

• Measuring horizontal distances

• Both (a) and (b)

• Measuring the bearing line