Fibel, oder Elementarbuch für den ersten Unterricht in deutschen Schulen
A German elementary primer of 1816, published by Bädeker und Kürzel for the first lessons in German schools, its pages showing drawing exercises with triangles, circles, parallelograms, arcs and hatched lines. The plates are plain ruled-frame exercise sheets, and a designer might draw on their simple geometric shapes and dense hand-ruled line patterns for minimal diagrams or texture.
