An electrochemical battery cell comprising a metal container with an open end closed with a metal cover. A first aspect of the invention provides a method for use in the manufacture of a semiconductor device comprising the steps of applying a protective layer to a device, applying a first silicon nitride liner to the device, removing a portion of the first silicon nitride liner, removing a portion of the protective layer, and applying a second silicon nitride liner to the device. A flap through which the rotatable element is accessible is provided on the stand. In a preferred embodiment, the light source is constructed of a substantially planar illuminescent sheet which underlies the light channeling membrane.