A chain operated venetian blind is an enormous innovation in the world of blinds. A single chain operates the raising and lowering of the blind whilst also controlling the slats. This is also known as Mono Control. The unique Mono Control easily operates from one end of the headrail giving a neater appearance overall and cuts down on the number of cords that need to be gathered by the user after use. This innovative mechanism ensures the blind constantly stays level when lifted and the slats can be angled more accurately.