The tools used are extremely primitive - hollow iron blowing-rods, solid rods for holding vessels during manipulation, spring tools, resembling sugar-tongs in shape, with steel or wooden blades for fashioning the viscous glass, callipers, measure-sticks, and a variety of moulds of wood, carbon, cast iron, gun-metal and plaster of Paris (figs.
d, " Sugar-tongs" tool with wooden f, Pincers.
e, e, " Sugar-tongs" tools with cutting h, Battledore.
Across the arms he balances the iron rod to which the glass bulb adheres, and rolling it backwards and forwards with the fingers of his left hand fashions the glass between the blades of his sugar-tongs tool, grasped in his right hand.
Under the old system the form of the bowl is gradually developed by blowing and by shaping the bulb with the sugar-tongs tool.