1 in 100
1 in 250
1 in 500
1 in 1000
always additive
always subtractive
always zero
sometimes additive and sometimes subtractive
measuring approximate horizontal angles
setting out right angles
measuring bearings of the lines
none of the above
is used at the time of standardising the tape
neutralizes the effect due to pull and sag
makes the correction due to sag equal to zero
makes the correction due to pull equal to zero
line ranger
steel tape
optical square
cross staff