CAD Scale Factors - Archtoolbox
www.archtoolbox.com › cad-scale-factorsFeb 3, 2021 · To convert an engineering drawing scale to a scale factor: Select the desired scale. 1" = 20' Multiply the feet by 12. 20 x 12 = Scale Factor 240 Architectural Scales Engineering Scales Be sure to check out our article, Converting Between Drawing Scales, if you need to manually change the scale of a drawing or object.