Explanatory notes
… made from birch, hazel, holly, heather or broom twigs, sorghum, millet, camelina, etc., straw (or panicles), or … ebonite, certain metals (steel, aluminium, brass, etc.). In some brushes (e.g., circular brushes for machines, or … for gramophone records, including those for mounting on the sound‑arm to clean the record automatically. (12) Brushes …