Regiæ Scientiarum Academiæ Historia
This is a 1698 Parisian history of the Royal Academy of Sciences in Paris, compiled by Jean-Baptiste Du Hamel, the academy's secretary, for scholars and natural philosophers. The four pictures are geometric diagrams of the eye and of lens optics, with lettered points, dotted sight lines and circles drawn in plain engraved line. A designer could take their clean schematic linework and lettered labels as a model for technical diagrams.
