00:00If you pressed the hidden button on a 19th century European spring dagger,
00:05three double-edged blades concealed inside the handle would instantly react.
00:09This pressure would release a locking pin activating the spring mechanism.
00:14Then powerful springs force all three blades outward in a single motion.
00:18The blades slide through precision slots at the front and fan open like a propeller.
00:23They lock into combat position, transforming the handle into a three-pronged weapon.
00:28An ingenious mechanical design using the strongest springs and lightest metals,
00:33staying completely concealed until the moment of activation.
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