Z0.12 thk al aly 5052-h32 per qq-a-250/8, engraved fill semigloss enamel per tt-e-529, color no. 2110 (red) per fed-std-595, chem film coat per mil-c-5541, cl 1a, 1 coat primer per tt-p-1757, 2 coats lusterless enamel per tt-e-527, color no.36231(gray) per fed-std-595; o/a dimensions 3.75 by 8.68 by 0.12 nom in.; one 2.52 in. Diameter nom hole c to w edge 1.68 in.; scale in in. Opposite end from hole, 1.0, 0.5, 0, 0.5, 1.0 marks, increments in tenths of an in.; two slots placed on opposite sides of hole
