Explanatory notes
… band saws and reciprocating saws, including those using toothless blades, etc.). (2) Disc (e.g., abrasive) cutting … grinding, etc., machines , used mainly for smoothing edges, levelling bases or trimming moulded objects. (4) Polishing … or polishing optical glass by wearing down the surface of lenses, prisms, spectacle lenses (spherical, ring‑shaped, …