Schaffhausen has some well-known industrial companies ( Georg Fischer ) in piping systems , machine tools and automotives , one internationally-reputed watches manufacturer ( IWC ) , and drug industry ( Cilag , founded by Bernhard Joos ) . Schaffhausen hosts some well-known industrial companies like Georg Fischer ( piping systems , machine tools and automotives ) , an internationally-reputed manufacturer of watches ( IWC ) , pharmaceutical industry ( Cilag , founded by Bernhard Joos ) and BB Biotech ( biotechnologies ) .