Model for 3D printing of a lever frame with interlocking box, as used in standardized mechanical interlocking (type Einheit) on German and Polish railways. Model contains parts for building a lever frame for 8 or 17 levers and up to 16 interlocking sliders.

Model for 3D printing of a standardized points lever utilized in mechanical interlocking of type Einheit, commonly found on German and Polish railways. The model can be assembled as fully functional, including the emergency decoupling mechanism.