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Which, contrary to popular belief, is NOT a straight line

Tie-down straps

Full-face, half-shell, or open-face design with 360 Turbine Technology and ASTM downhill certification

From the image above I think its fair to conclude that The difference between the ATC #16 and the D1760 #16 is very close to the same as the difference between the ATC #16 and the D1760 #14 The difference between the ATC #14 and the D1760 #14 is less than the difference between the ATC #14 and the D1760 #12 The difference between the ATC #12 and the D1760 #12 is greater than the difference between the ATC #12 and the D1760 #10 So what does all of this mean with respect to chironomid patterns