What is Descriptive Unit

20th c. Architectural Archives are probably the latest and hugest collections of architectural documents on paper. Their conservation depends largely on the discovery, analysis, comprehension and interpretation of their value as Cultural Heritage. Today design documents produced by contemporary masters of Architecture, especially original drawings, are usually digitized and shared in the Web at scholars' disposal. The fate of the Archives that preserve the design drawings of minor architectures is completely different, so that the main motive of their safeguard has to be found in the recognition of their value as the testimony of a diffused architecture, significant to trace a framework of the building activity of their time. This is the case of the Archive of Industrial Architecture produced by Nino and Paolo Rosani, active in Turin up to 2010, for which a series of digital devices designed to enhance and communicate its most relevant content are being hypothesized.