One of the exhibits in the Vasa Museum in Stockholm showed a combination lock for a chest, recovered when the ship was salvaged. This picture shows the inside of the chest, so that you can see the mechanism.

Ingenious.
One of the exhibits in the Vasa Museum in Stockholm showed a combination lock for a chest, recovered when the ship was salvaged. This picture shows the inside of the chest, so that you can see the mechanism.
Ingenious.