In General an Estimator like me is expert in chart of estimating cost.In the construction costan architect brings three-dimensional thinking from the assignor or project owner into a two-dimensional image. Next the estimator brings the two-dimensional image the architect produces back to the three-dimensional building to estimate the cost..But that's not all. I will still provide input to the architect or ouwner. If there are deficiencies or deviations in the design, in the design. So an estimator is not enough to just be able to count and correct but also must be proficient in drawing dimensions. Although not like an architect.