Transparent paper particularly useful for the execution of copies. Cennino Cennini (end of the 14th Century) illustrates how to obtain tracing paper by thinning the surface of sheep parchment or carta bambagina, greased with linseed oil or wax to make it shiny. Artificial tracing paper may be obtained by spreading out a thin layer of animal glue on a marble slab greased with olive oil.
note: Carta da lucido, voce in Cecilia Prosperi, Il restauro dei documenti di archivio. Dizionarietto dei termini, Roma, Ministero per i Beni e le Attivitą Culturali, 1999.