Fishing knife
The fishing knife is a minor tool used when angling. It is a pocket knife that contains in addition to the knife blade, a disgorger and sometimes scissors. While sheath knives can be used for the purpose, they are not preferred. Henry Cholmondeley-Pennell, an inspector of fisheries, recommended additional implements to be kept inside the handle: a "pricker" for loosening tight knots, a minnow needle, a baiting needle, and suggested the knife to include, "last but not least", a corkscrew.
The convenience of one-handed operation of a switchblade design was advertised in the 19th century as an advantage for fishing.