MRC:
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.FEAT
Special Features:
Has 3 square cutouts, 0.810 in., near bottom of panel, and one circular cutout to the right of squares, 0.531 in, dia., 10 circular cutouts 0.531 in. Dia., c'bore 0.750, 0.12 dp, in 2 vertical rows near outer edges; corners are cut out with rounded, half-arch shape; marked "fire extinguisher" a; pmg top edge, marked above middle square, "elec" above "port", marked above right square "smoke" above "stbd", marked around circle to right at top, "ack", 90 deg, "alm over or", at 180 deg, "pa", marked above rows of circular cutouts "fext" and to left of ea. Circle "a", and to right, "b"
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:
Resistant to humidity, fungus, salt fog, dust (fine sand); operating temp: m30 degrees f to p160 degrees f
