Erste Sammlung der böhmischen Ackergeräthe mit XXV. Quartkupferplaten in verjüngtem Prager Maßstabe, oder theoretisch- und praktische Beschreibung der in dem Königreiche Böheim üblichen Pflüge ... und Pflügungsarten
A 1784 German agricultural treatise by Johann Mehler, self-published, describing plough types and ploughing methods used in Bohemia, written for farmers and practical implement makers. Its pages are engraved plates of ploughs with numbered parts, lettered figure labels, and scale sketches laid out in neat rectangular frames on paper. A designer could take the tidy technical plate layout, the numbered figure keys, and the spare line-drawn mechanical forms of old farm tools.
