MRC:
						A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
					 
					
						General Description:
					
					
						Mirror-matl pyrex;  flat to 1/4 fringe;  parallel to 1 sec of arc;  alum coating per mil-m-13508;  surface quali type 80-50 per mil-o-13830;  3.5 in. L, 1.87 in. W, 0.97 in. Thk;  usable surface 1.75 in. W, 2.75 in. L;  mount-matl steel;  gray enamel finish;  sst screws;  azimuth adjustment 4 deg, elevation 2 deg;  hardwood carrying case					
				 
							
					
						MRC:
						The justification for the assignment of a federal supply class /fsc/ to an item based on the classification of the next higher classifiable assembly.ZZZV
					 
					
						Fsc Application Data:
					
					
						General purpose laboratory calibration and alignment of surface plates, angle blocks, precision squares, and optical instruments