Benjamin Brameri Apollonius Cattus oder geometrischer Wegweiser ...
Benjamin Bramer's 1646 German geometry treatise, an Apollonius-based guide to conic sections published in Germany for mathematicians and surveyors. Its pages are dense with numbered letter-labelled diagrams of parabolas, ellipses and circles, drawn as textbook proofs. A designer could take the precise, clean line diagrams and their hand-set letter labels as a model for technical schematics.
