Sowerbutt's Knife

He was never without his girl guide clasp-knife, one of the thousands mass-produced by Sheffield cutlery manufacturers for Lord Baden-Powell’s youth movement over the years. Sowerbutt, who had spent a short spell as a sheet metal worker at the Westwood heavy engineering factory in Millwall, had drilled easy-to-flick locks onto the blade and the needle-point stabbing spike, but otherwise there was nothing remarkable about his favourite work tool.
The knife, stamped girl guide in capital letters along its metal case, had escaped countless searches over the years to the fatal cost of some of the searchers. Sowerbutt had palmed it, hidden it, secreted it and pocketed it, but his faithful servant of steel had never once been accused of murder and mayhem. http://www.amazon.co.uk/Colour-Lemon-Surrender-1940-ebook/dp/B008USR7FA