Is a small torpedo level allowed in carry-on?

Yes, as long as it's 7 inches or shorter end to end. Most torpedo levels run 9 inches or longer, so measure yours before flying.

Can a full-size 24-inch carpenter's level go in a checked bag?

Yes. There's no length restriction for checked baggage — only the carry-on rule limits tools to 7 inches.

Spirit Level

Spirit levels 7 inches or shorter are allowed in carry-on; longer levels must be packed in checked baggage.

Carry-on

Allowed with conditions

Checked

Allowed

Carry-on details

Allowed with conditions. TSA doesn't list spirit levels by name, but it applies the same 7-inch rule to hand tools generally: a small torpedo level 7 inches or shorter is allowed in carry-on. Standard carpenter's levels (typically 24 inches or longer) exceed that limit and must go in checked baggage.

Checked-bag details

Allowed. Spirit levels of any length and design — torpedo, box, or standard carpenter's levels — can be packed in checked baggage without restriction.

Quantity limit

7 count (per item)

Special instructions

Measure the full length of the tool, not just the vial or reading window. If you're not sure your torpedo level is under 7 inches, pack it in checked baggage to avoid it being confiscated at the checkpoint.

FAQ

Is a small torpedo level allowed in carry-on?: Yes, as long as it's 7 inches or shorter end to end. Most torpedo levels run 9 inches or longer, so measure yours before flying.
Can a full-size 24-inch carpenter's level go in a checked bag?: Yes. There's no length restriction for checked baggage — only the carry-on rule limits tools to 7 inches.

Related items

Source: TSA — What Can I Bring? · Last verified: 2026-08-01

Final decision rests with the security officer at the checkpoint.