27.
28.
29.
31.
32,
33,
34.
35.
Isogonic lines are the lines having the same :
(ಗಿ) Elevation (18) Bearing (~) Declination (D) Dip
An example for a level surface is :
(A) Surface of earth (8) Surface of sea
(८) Surface of a reservoir (D) पत्त of a still lake
Invar tapes are made of an alloy of :
(வ) Nickel and steel (8) Copper and steel
(C} Tin and steel (D) Aluminiu....
See more