Cylinder mortise lock, which is a type of door lock where the locking mechanism is installed into a mortise (a pocket) cut into the edge of the door.
Components:
Main body of the mortise lock, a dimple cylinder and a set of dimple keys.
Keys:
The keys are "dimple keys," characterized by the flat side of the blade having dimple-like cuts, which interact with the pins inside the cylinder to operate the lock.
Application:
These types of locks are typically found in building entrance doors, office doors, and other areas requiring a robust locking mechanism.