Compressing machines; Cutting machines; DC generators; Electric arc welding machines; Electric pumps; Electric vacuum cleaners; Electrical drills; Engraving machines; Gas welding guns; Power-operated nailing guns; Rotary grinding machines; Screwdrivers, electric; Sewing machines; Smoothing presses; Spray guns for paint; Steam-operated power generators; Turbogenerators; Typographic presses; Welding torches; Wood drilling machines