Which reminded me of a tale I was told about one of my previous employers who (before my time) purchased a number of fighter aircraft from a European supplier and was told there was a need for specialist screwdrivers to remove panels. These special screwdrivers were very expensive and after several were "misplaced" a very observant techo tried a cheap version he had seen in a home supply shop. Worked a charm so the box packers were instructed to purchase locally available Phillips Head screwdrivers.
Gne