These workbenches, found in Girona Cathedral, served for all the process of preparation of the stained glass windows in the cathedral presbytery.
With a punched, the glazier marked the images for the window on the whitened surface of the table. This drawing was then used as a guide for cutting the glass with a red-hot iron and setting them in lead.
A study of the table surfaces with ultra-violet light has revealed, beneath the geometric markings on one of the surfaces, a drawing of Our Lady which coincides with that of the Annunciation window.