SURVEYING QUIZ

concave

plano-convex

plano-concave

convex

1 in 100

1 in 250

1 in 1000

1 in 500

d2

1/d2

d

1/d

Equator

50° N Latitude

5° S latitude

10° N

on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate

on its outer spindle with a relative motion between the vernier and graduated scale of lower plate

on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate

on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate

line passing through the center of cross hairs and the center of eye piece

line parallel to the mean spheriodal surface of earth

horizontal line

line passing through the objective lens and the eye-piece of a dumpy or tilting level

24° 0'

23° 27'

22° 30'

23° 30'

Main station

Satellite station

Subsidiary station

Pivot station

2 mm

4 mm

6 mm

10 mm

steel

linen

invar

cloth and wires