Conmemorating the 4th Centenary of the publication of the tailoring treatise Geometria y traça perteneciente al oficio de sastres... (Geometry and Tracing Pertaining to the Tailoring Trade...) by Francisco de la Rocha Burguen, printed in Valencia by Pedro Patricio Mey at the author's own expense in 1618. From the end of the 16th to the beginning of the 18th century, tailoring treatises were Spanish. One of their objectives was to facilitate tailors' training so they could practice their trade and obtain the title of master tailor. They also allow us to learn about how tailors' work was regulated, and access to the profession. Their circulation amongst tailors helped to standardise garment-making, and they reflect the evolution of silhouettes and the use of fabrics in Europe in the Modern Age.