For an accurate sizing job, you need an accurate finger measurement. What could be more precise than the exact inside diameter and circumference in mm? Each ring in our 4-Scale Finger Gauge is marked with:
- Inside diameter in millimeters, 13.0 to 24.2
- Circumference in millimeters, 41 to 76
- Closest American equivalents, sizes 1 to 15-1/2
- French sizes 1 to 36
- Meets ISO Standard 8653.