Four different things to measure
| Feature | What the measurement means |
|---|---|
| Gap | Empty space between neighbouring contours |
| Bridge | Material that connects two regions |
| Loose piece | An isolated part that must survive handling |
| Stroke | A visual line width; it may be treated as a centreline by software |
Use a measured process threshold
The checker accepts your threshold and identifies a limited set of small primitive boxes and strokes. It leaves complex path features unknown.
Keep compensation separate
A kerf measurement made after compensation cannot be used as though it came from uncompensated geometry.