Cost X can measure from a scan image of a hand sketch to a BIM model. One may see BIM as a 3D model, but it is beyond conventional 3D models. Read Application of BIM (or all articles in BIM World for better understanding) to know more about BIM models. CostX can effectively and intuitively measure quantities from BIM models. CostX is built in with features you can view and read the model for estimating purposes.
This video tutorial is about how you can use BIM models in CostX.