MRC:
Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.SUPP
Supplementary Features:
Plastic and printed circuit boardto be environmentally sealed; electrical input for illumination shall be 0-28 vdc variable, drawing a current of 180 milliamperes, 5 volt lamps are to be wired in a serie-parallel circuit two circuits, six lamps each; legend lighting to be per mil-c-25050, lunar white, x coordinate being from .240 to .440 when at rated voltage and when dimmed to .25 ft lamberts.
