Metric conversion table.

Inches Millimeters (mm) 8 ⁄ 64 equals 3.2 16 ⁄ 64 equals 6.4 24 ⁄ 64 equals 9.5 32 ⁄ 64 equals 12.7 40 ⁄ 64 equals 15.9 48 ⁄ 64 equals 19.1 51 ⁄ 64 equals 20.2 52 ⁄ 64 equals 20.6 54 ⁄ 64 equals 21.4 56 ⁄ 64 equals 22.2 1 equals 25.4 1 8 ⁄ 64 equals 28.6 1 16 ⁄ 64 equals 31.8 1 24 ⁄ 64 equals 34.9