holes in the first coating supply tube are staggered from the holes in the second supply tube such that a hole in one coating supply tube discharges coating into the chamber across from a land in the opposite coating supply tube this effect may be emphasized by adjusting the spacing between metering holes or the diameter of the metering holes generally in the center region of each tube the spacing of the holes the diameter of the holes or both would remain constant with increased spacing decreased diameter or both toward the ends of the tubes generally the variation in hole diameter or spacing will occur about one meter from the end for example the metering holes may be spaced approximately 1 4 2 8 inches apart at the center of a coating supply tube with the spacing being gradually increased until adjacent metering holes are approximately 2 8 to 4 2 inches apart at an end as an alternative to varying the spacing between holes the diameter of the holes could be varied plus or minus 50 percent this variation would take place over the typically 400 in width of the coating applicator 20 as an example the nominal diameter of the holes might be about u215c of an inch with a variation of plus or minus 50 percent the coating supply tubes may be about four inches in diameter with a range of supply tube diameter of from about 2 u00bd inches to 10 inches it should be noted that although cylindrical coating supply tubes are illustrated tubes of other profile may be employed as shown in fig1 the coating applicator 20 is provided with profiling capability by a series of threaded adjustment rods 86 which extend from a profiling bar 88 which.