In tacheometrical observations, vertical staff holding is generally preferred to normal staffing, due
to
(A) Ease of reduction of observations
(B) Facility of holding
(C) Minimum effect of careless holding on the result
(D) None of these
to
(A) Ease of reduction of observations
(B) Facility of holding
(C) Minimum effect of careless holding on the result
(D) None of these