from The Century Dictionary and Cyclopedia
- n. In mech., a particular kind of bevel-wheel, the bevel being limited to an angle of 45, and the teeth of the wheel meshing with the teeth of another of the same bevel and diameter.
- n. In glass-cutting, a wheel used for cutting a groove of triangular section.
- n. A friction-gearing or -wheel of which the working face is at an angle of 45° to the axis.
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