Abstract: An apparatus including a first body part and a second body part slidingly movable in relation to each other from a compact position to an extended position, a housing configured to receive a replaceable internal part, and a joint mechanism joining the first and second body parts to a third part of the apparatus. The joint mechanism is configured to allow, when the apparatus is in said extended position, the first and second body parts to tilt in relation to said third body part to provide access to the housing.

Abstract: An apparatus including a first body part and a second body part slidingly movable in relation to each other from a compact position to an extended position, a housing configured to receive a replaceable internal part, and a joint mechanism joining the first and second body parts to a third part of the apparatus. The joint mechanism is configured to allow, when the apparatus is in said extended position, the first and second body parts to tilt in relation to said third body part to provide access to the housing.

Abstract: An arrangement comprising a printed wiring board (210) having a number of electrical contact areas on a surface thereof (216) and one or more indents or apertures (218) residing next to the contact areas, one or more diffractive light guides (214) respectively positioned to said one or more indents or apertures (218) so that the one or more diffractive light guides (214) at least partly reside below the surface level of the printed wiring board (210), and at least one light source (212) positioned on or next to the printed wiring board (210) for emitting light to the one or more diffractive light guides (214). Also a keypad assembly utilizing the arrangement and various uses thereof are presented.