blade length; length of a blade
Refers to the measurable length of a sword, knife, or similar bladed weapon or tool.
The blade length of this sword is about 70 centimeters.
sword-edge walking; walking barefoot on a sword blade
A traditional acrobatic or circus stunt where a performer walks barefoot along the sharp edge of a sword blade.
I saw a sword-edge walking stunt at the circus.
This knife has a blade length of 15 centimeters.
The street performer impressively walked along the edge of the sword blade.
The police measured the length of the knife's blade.