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:
Al alloy; o/a 4.34 in. Diameter 0.083 in. Thk; 10 to 99 log units range 1/10 sm increment grad between range 10 to 15 1/5 sm increment grad between range 15 to 30 1/2 sm increment grad between range 30 to 60 1 sm increment grad between range 60 to 99 black on gray exc num 10 gray against black ea corrected alt miles min and true airspeed scale and calibrated alt calibrated airspeed and min scale, black on gray ea hr 1 to 10 hr range 5 and 10 min grad increment, pressure alt m2000 to p80000 ft range 5 and 10 min grad increments, pressure alt m2000 to p80000 ft range 1000 ft sm increment grad, air temp m80 to p50 degrees c range 5 degrees c sm increment grad, density alt m10000 to p55000 ft range 1000 ft sm increment grad; furnished w/o case