Functional horizontal blueprints and transverse cross-sections mapping the layout, heating system, and night cell arrangement in Langholmen 插畫檔

This technical architectural engraving presents a top-down floor plan alongside dual vertical cross-sections illustrating the spatial distribution and heating design of a specialized nocturnal separation unit. Developed during the nineteenth century, these geometric schematics demonstrate the penal architecture and insulation methodologies adopted within the prison infrastructure of Sweden. The diagrams utilize an alphabetical legend to precisely map the layout of a compact night cell containing a basic bedstead and a stool, situated adjacent to an institutional corridor featuring a centralized circular heating stove or furnace system designed to regulate the ambient temperature, while also tracking dedicated conduits engineered for the extraction of foul air.