Metric measurements for Czech & Japanese Bugle Beads:
| Japanese #1 is 3mm | Czech #1 is 2mm |
| Japanese #2 is 6mm | Czech #2 is 4mm |
| Japanese #3 is 9mm | Czech #3 is 6mm |

| Japanese #1 is 3mm | Czech #1 is 2mm |
| Japanese #2 is 6mm | Czech #2 is 4mm |
| Japanese #3 is 9mm | Czech #3 is 6mm |