# Medical-clinical mercury thermometer · FAA (air transport) — Flying with restricted items: FAA, TSA and IATA baggage and air cargo rules

For Medical-clinical mercury thermometer, authority is FAA (air transport); restriction type is restricted; scope is checked baggage only; not allowed in carry-on; conditions is One small medical or clinical mercury thermometer for personal use, when carried in a protective case in checked baggage, recorded from its source on 2026-08-10.

- **Item or substance:** Medical-clinical mercury thermometer
- **Authority:** FAA (air transport) _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** checked baggage only; not allowed in carry-on _(our reading, not quoted from the source)_
- **Conditions:** One small medical or clinical mercury thermometer for personal use, when carried in a protective case in checked baggage. _(verified: appears in the quote below)_

## What the source says

> One small medical or clinical mercury thermometer for personal use, when carried in a protective case in checked baggage.

## Source

- https://www.faa.gov/hazmat/packsafe/thermometers

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [Flying with restricted items: FAA, TSA and IATA baggage and air cargo rules](https://referencesource.org/air-travel-item-restrictions/).