NATO Mersey

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NATO Mersey

NATO Mersey
Mersey Lock 04.jpg
Name NATO Mersey
Lock Type Safe lock
Lock Design Lever
Year(s) Produced 1970 - 1990


The following text and images were submitted to LockWiki by Gravitykarma, 3 July 2021:


General

The Nato Mersey exists in two distinct guises, each with some evolutionary revisions. The 10 lever variant and the 14 lever variant. Both locks share a number of common security features having a common ancestry. These locks were produced for the Ministry of Defense (MOD) and the North Atlantic Treaty Organisation (NATO) during the cold war in the 1970’s through to the 1990’s. There are similarities to the Chatwood Milner Manifoil, having been produced by the same manufacturer and both were in common use by the SSG(the group wich secures the MOD(Ministry Of Defence) of the UK).

The mersey keylock and the manifoil mark IV are used in combination on MOD safes and/or strongrooms etc.


The lock has an unusual “V” shaped brass key (earlier models had a plastic key that was prone to breaking). The lock also has a plastic cover locked into place by the mechanism itself and can only be taken off using the key - the reason was to stop the lock being tampered with between manufacturing and fitting.

Key security features

The 14 lever variant


== The 10 lever variant