I believe the term "pen-knife" was used because the thickness and length of the blade were not substantial. And pen-knives fold.....they could not be used safely by the handler to pierce bone. They can be carried in a pocket easily.
The knife that was used on some Jack murders sounds like a fixed position sturdy blade maybe 6-8 inches long....for that you need a sheath, or to wear it in your belt....a fairly long, very sharp knife cannot be carried in a pocket.
I still believe a Bowie style would have been ideal....its sharpened top and bottom near the tip...and its slightly curved.
Best regards all.
The knife that was used on some Jack murders sounds like a fixed position sturdy blade maybe 6-8 inches long....for that you need a sheath, or to wear it in your belt....a fairly long, very sharp knife cannot be carried in a pocket.
I still believe a Bowie style would have been ideal....its sharpened top and bottom near the tip...and its slightly curved.
Best regards all.
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