Surveying
If the general ground level of any area is 10% of the flying height, the principal points may be used as the centers of radial directions for small scale mapping even in tilted photograph up to

ANSWER DOWNLOAD EXAMIANS APP

Surveying
Contour interval is

Larger if the time available is more
Inversely proportional to the scale of the map
Directly proportional to the flatness of ground
Larger for accurate works

ANSWER DOWNLOAD EXAMIANS APP