About 16.2cm in length within 26 yards

27 yards, about 16.7cm long

About 17.3cm within 28 yards

29 yards about 17.8cm long

Within 30 yards, it is about 18.5cm long.

About 18.8cm within 31 yards

About 19.4cm in length within 32 yards

33 yards about 20cm long

About 20.7cm within 34 yards

35 yards about 21.3cm long

Within 36 yards, the length is about 21.8cm

About 22.4cm within 37 yards

22-25 yards, 4 pairs in one hand

26-31 yards, 6 pairs in one hand

32-37 yards one hand 6 pairs