# Mercury barometer or thermometer (government weather bureau) — Postal shipping restrictions by item category

For Mercury barometer or thermometer (government weather bureau), carrier is FAA (air transport); restriction type is restricted; scope is carry-on only; not allowed in checked bags; conditions is Carried by government weather bureau or similar official agency; must be in carry-on baggage only, recorded from its source on 2026-08-10.

- **Item category:** Mercury barometer or thermometer (government weather bureau) _(verified: appears in the quote below)_
- **Carrier:** FAA (air transport) _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** carry-on only; not allowed in checked bags _(our reading, not quoted from the source)_
- **Conditions:** Carried by government weather bureau or similar official agency; must be in carry-on baggage only. _(verified: appears in the quote below)_

## What the source says

> Must be in carry-on baggage only. Not allowed in Checked Bags

## Source

- https://www.faa.gov/hazmat/packsafe/printable-chart

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).