Abstract: A circular housing having a top surface and a bottom surface, and an inner chamber, where a ring on the top surface of the circular housing has a teethed upper surface, and a housing magnet is located within the inner chamber of the housing. A lid is to be located on the top surface of the housing, and a lid magnet located within the lid is magnetically attracted to the housing magnet when the lid is positioned on top surface of the housing. The outer perimeter of the top surface of the lid is teethed, and the teethed outer perimeter of the top surface of the lid and the teethed upper surface of the ring interlock when the lid is positioned on top surface of the housing.

Abstract: A circular housing having a top surface and a bottom surface, and an inner chamber, where a ring on the top surface of the circular housing has a teethed upper surface, and a housing magnet is located within the inner chamber of the housing. A lid is to be located on the top surface of the housing, and a lid magnet located within the lid is magnetically attracted to the housing magnet when the lid is positioned on top surface of the housing. The outer perimeter of the top surface of the lid is teethed, and the teethed outer perimeter of the top surface of the lid and the teethed upper surface of the ring interlock when the lid is positioned on top surface of the housing.

Abstract: A self-centering and adjustable removable mount having a circular base and opposing outer sloping edges on the outer periphery of the circular base. A notch is formed between the bottoms of the opposing outer sloping edges. A cylindrical shell surrounds the outer sloping edges of the circular base, and the cylindrical shell includes a tab on a lower inner wall of the cylindrical shell sized to fit into the notch of the circular base, wherein the outer sloping edges of the circular base guide the tab into the notch when the cylindrical shell is placed around the circular base, thereby positioning the cylindrical shell in a predetermined orientation. A magnetized lid is connected to the back of a device to be mounted, and the magnetized lid is attracted to a base magnet when the lid is positioned on top of the cylindrical shell.