| Significance
of Blade Torsion |
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| Tip of
“left hand” |
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| alternate-face,
beveled |
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| knife
facing toward |
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| viewer |
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| • | Blade
Torsion |
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| Angle (BTA) |
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| • | BTA =
angle |
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| created by the
plane |
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| of the bevel
relative |
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| to centerline of |
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| blade in unused |
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| condition (BU) |
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| BT |
| BU |
| SA |
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| Cross section of |
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| archaic
bevel knife form |
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