API Reference > imodeljs-common > Geometry > Projection > scaleFactor scaleFactor Readonly scaleFactor: undefined | number The scale reduction factor applied at origin. The nature of the projection has a inherent scale factor applied that gradually varies outward from the projection origin. The scale factor at origin enables to level the inherent scale factor over an use extent. For the michigan variation of the Lambert Conformal Conic projection it can be used instead or in addition to Standard Parallel to define a scale factor. Defined in core/common/src/geometry/Projection.ts Line 251 Last Updated: 12 June, 2024