Wiltshire Staysharp knife and scabbard Mk I

Designed by Devlin, Stuart in Melbourne, Victoria, Australia, 1969.
In 1964 a US market survey showed that 80 percent of Americans didn't know how to sharpen a knife. This inspired Dennis Jackson, a design engineer for Wiltshire Cutlery in Melbourne, who saw an opportunity to create a knife that sharpens itself. In …
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