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Dimension of a dumbbell specimen (ASTM D638 Type V).
| Symbol | Description | Dimension (mm) |
|---|---|---|
| I | Gauge length | 7.62 |
| L | Length of narrow selection | 9.53 |
| Wo | Width of narrow selection | 3.18 |
| G | Grip length | 19.05 |
| W | Total width | 9.53 |
| TL | Total length | 63.50 |
| R | Radius of curvature | 12.70 |
