Le croquis-calque adapté a l'etude des différents styles de reliure : a l'usage des cours professionnels de dessin et de dorure sur cuir du Syndicat patronal de la reliure et de la brochure
A 1904 Paris bookbinding manual published by the Syndicat patronal de la reliure et de la brochure, written by Paul Gruel for professional courses in leather gilding and tooling. Its plates are line-drawn tooling designs for book covers in historical styles, labelled by century from the 16th to the 18th. The pictures give a designer dense, symmetrical ornament: scrolls, fleurons and frame borders that can be lifted for decorative panels and period-styled page framing.
