Architectural schematics display technical structural details for the secure doors and windows within the Perugia Prison 插畫檔

This technical architectural engraving presents specialized engineering diagrams detailing the precise structural reinforcement and security mechanisms of entryways and windows configured for individual prison cells located in Italy. Dating from the nineteenth century, the plate features comprehensive elevations, lateral cross-sections, and top-down floor layouts illustrating a heavy wooden door equipped with prominent iron reinforcement bars, an advanced external lock assembly, a small food pass hatch, and an integrated eye-shaped inspection peephole. The right side of the layout provides detailed sectional views of the masonry recesses, highlighting a multi-paned window frame alongside an exterior iron security grille, all meticulously drafted at an official administrative scale of 1:25 to record standardized penal security infrastructure of the period.