| Answer | Crossword Clue |
|---|---|
| RLO | Post-office unit: Abbr. |
| OUNCE | Post office unit |
| OUNCE | Post office scale unit |
| OUNCE | Scale unit at the post office |
| GPO | Post office: Abbr. |
| RTES | Post office chart: Abbr. |
| RFD | Erstwhile post-office abbr. |
| LTR | Post office delivery: Abbr. |
| RPO | Type of post office: Abbr. |
