The collection contains about 9500 drawings and plans from various technical fields within the time range of the 19th and 20th centuries. It includes layout sketches and schemes of the size A4 as well as large design drawings of the size A1 and A0. The fields represented here are, in particular, mechanical engineering and transport, metallurgy, mining, etc. Precious files are represented by works of students of the Prague Technical University, coloured drawings of technical installations, machines and buildings from the period between 1810 and 1860 (about 500 pieces).