Table 3 shows field name and requirements for the handling form. Handling options List box Table 3. Handling information field names and requirements. A shape class is either rotational or non-rotational. Parts are rotational if symmetry is repeated as the part is rotated through some angle.
Circular parts possess rotational symmetry.
If the thickness of a part is less than the check box caption, simply check the box by left-clicking it. This tells DFA that this condition exists. Similarly, if the weight of the part matches or exceeds the condition given by the check box caption, check its box. Alpha symmetry is the largest angle a part would have to be rotated perpendicular to its insertion axis. This angle is usually twice the angle reported by most users.