… form. Pressure applied by means of an office machine or a stylus on the original sheet produces a reaction between two … products. Pressure applied by means of a typewriter, a stylus or any other appropriate instrument perforates the …
… colour and composition; they must also be of the same style and of corresponding or compatible size. However, … of an ensemble must be of the same fabric construction, style, colour and composition; they also must be of …
… equal length and diameter. The resulting small cylinders are then introduced, together with a mixture of … metal drum revolving over a furnace. Heat softens the glass cylinders and friction gives them a more or less spherical …
