A low cost and long lasting hinge mechanism suitable for hinging a cover to a housing of a device is disclosed. The hinge mechanism has a pair of pins attached to the cover and a corresponding pair of apertures on the housing. The pins fit into the apertures to hinge the cover to the housing to allow the cover to be tilted from a closed position to an open position. The aperture has a first portion and a second constricted portion. A pivoting point is provided on a tab on the housing. A corresponding cam-profiled section is provided on the cover for interacting with the pivoting point to urge the pin into the corresponding constricted portion of the aperture for securing the cover in the open position.