| Englisch | Spanisch | |
|---|---|---|
| Engineering | ||
| Engineering | radio-supervised master clock | reloj patrón supervisado por radio |
| Maritime | ||
| Maritime | master clock system | cronómetro principal |
| Maritime | master clock system | sistema de reloj maestro |
| Nautical | ||
| Nautical | master clock system | cronómetro principal |
| Nautical | master clock system | sistema de reloj maestro |