Band 7
This is a 1526 manuscript volume compiled under Elector Ludwig V of the Palatinate, held at Heidelberg University Library; the record gives no further detail. A single small pen sketch on a pasted paper slip shows a schematic apparatus: a round vessel labelled with a pipe and cross-lines, linked by a tube to a tall rectangular box with a handle and a small plate, with a bracketed label below. Designers might take from it the clean, diagrammatic labelling style of early technical drawing, with minimal line weight and handwritten annotations.
