Domus - Recessed Knife Lock 35mm with Adjustable Language and Cylinder 75mm Silver - 914357K

Domus - Recessed Knife Lock 35mm with Adjustable Language and Cylinder 75mm Silver - 914357K

Domus recessed lock, in silver color, with dimensions of 30-45mm. 
The total length of the cylinder of a lock consists of two dimensions. 
The first starts from one end to the center of the belly button, where the screw is placed, while the second concerns the distance from the center to the other end of the belly button. 
Usually the hole for the screw is not located exactly in the middle of the cylinder and the part with the smallest dimension is placed on the outer side of the door. 
In this case the total length of the cylinder is 75mm, with the piece from the screw socket to the outer part of the door being 30mm and the piece from the socket to the inner part of the door being 45mm.