Inner ten: 5.0 mm (±0.1 mm).
10 ring 11.5 mm (±0.1 mm)
9 ring 27.5 mm (±0.1 mm)
8 ring 43.5 mm (±0.2 mm)
7 ring 59.5 mm (±0.5 mm)
6 ring 75.5 mm (±0.5 mm)
5 ring 91.5 mm (±0.5 mm)
4 ring 107.5 mm (±0.5 mm)
3 ring 123.5 mm (±0.5 mm)
2 ring 139.5 mm (±0.5 mm)
1 ring 155.5 mm (±0.5 mm)
Black from 7 to 10 rings = 59.5 mm (±0.5 mm).
Ring thickness: 0.1 mm to 0.2 mm.
Minimum visible size of target card: 170 mm x 170 mm