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:
Black matte finish except for ext. Edges and cutouts around two 0.469 in. Diameter holes in which lamp bulbs are located; all ltrs and nos. Are white translucent and gothic condensed (0.12 in. H) whose light sources are the above bulbs and panel light ms25010-2a; two observation windows, one for degrees, other for miles