Surveying

A. the magnetic needle moves with the box
B. the line of the sight does not move with the box
C. the magnetic needle and graduated circle do not move with the box
D. the graduated circle is fixed to the box and the magnetic needle always remains in the N-S direction

A. is lighter than chain
B. is easier to handle
C. is practically inextensible and is not liable to kinks when in use
D. can be easily repaired in the field

A. ±2 mm
B. ±3 mm
C. ±5 mm
D. ±8 mm

A. centre of one handle to centre of other handle
B. outside of one handle to outside of other handle
C. outside of one handle to inside of other handle
D. inside of one handle to inside of other handle

A. 0° 30′
B. 89° 30′
C. 90° 30′
D. 269° 30′

A. the forebearing of AB and back bearing of AB differ by 180°
B. the forebearing of AB and back bearing of BA differ by 180°
C. both (A. and (B. are correct.
D. none is correct

A. line ranger
B. steel tape
C. optical square
D. cross staff

A. measuring approximate horizontal angles
B. setting out right angles
C. measuring bearings of the lines
D. none of the above

A. straightening the links
B. removing one or more small circular rings
C. closing the joints of the rings if opened out
D. all of the above

A. is used at the time of standardising the tape
B. neutralizes the effect due to pull and sag
C. makes the correction due to sag equal to zero
D. makes the correction due to pull equal to zero