S27E6: Wooden Matches, Tillage Machines, Telescopic Gangways, Mabe Pearls

Thin pieces of wood are cut, dried and coated with combustible compounds to produce matches. Heavy frames, discs and cultivating tools are assembled into agricultural tillage machines; nested structural sections and hydraulic systems create telescopic passenger gangways; and cultured half-pearls are grown against the inner surfaces of mollusc shells.