| Office name | District (Taluk) | State | Other |
|---|---|---|---|
| I.A.R.I. S.O
Telephone 011-25849036 |
Central Delhi DL | Delhi | DL New Delhi New Delhi Central Delhi Delivery |
| Inderpuri S.O
Telephone 011-25833606 |
Central Delhi DL | Delhi | DL New Delhi New Delhi Central Delhi Non-Delivery |
| National Physical Laboratory S.O
Telephone 011-25841150 |
Central Delhi DL | Delhi | DL New Delhi New Delhi Central Delhi Non-Delivery |