Rim lock

[1] It is the oldest type of lock used in the United Kingdom and Ireland.

It is of a basic design using (usually) a single lever and a sliding bolt.

Most older locks were large, some as big as 40 by 25 centimetres (15.7 by 9.8 in).

Most rimlocks used today on exterior doors in the British Isles are night latches.

A rim lock may also be seen on an antique pantry, pie safe, and other cabinets.