| Answer | Crossword Clue |
|---|---|
| BORE | Tube diameter |
| CALIBRE | Tube diameter |
| BORE | Inside tube diameter |
| AORTA | Tube about 1 inch in diameter |
| capillaries | A tube that has an internal diameter of hairlike thinness |
| capillary | A tube that has an internal diameter of hairlike thinness |
| calibers | The diameter of a body of circular section, such as a tube, blood vessel, or fiber |
| calibres | The diameter of a body of circular section, such as a tube, blood vessel, or fiber |
