Part accuracy is also computational accuracy and is used in the regeneration of features.
This is probably the most commonly known accuracy and comes in two flavors - relative and absolute.
Relative accuracy is the ratio of the smallest edge in your model to the length of the model bounding box diagonal . This is Pro/E default with a default value of .0012
Absolute accuracy is essentially the length of the smallest edge in your model and has length units.
Aren't you glad you asked the question ??