A reader writes:
As I review sieve sizes on AMS-S-13165, I am getting confused and thought maybe you could help. We are going to be using BT-5 glass bead, as I review the chart for the dimensions I need, it lists '.0165' under Max. and '.0177' under Min. (line 13 of the chart) is this an error? In all of the other lines, the Min is less that the Max. Are these reversed? Do I have a bad copy of the spec? Please advise, as I need to order sieves and am not sure what ones I need. Thanks

Looks like you caught another typo. It does appear that the numbers are switched. But on second look, and according to AMS 2431/6 the minimum size should actually be .0117. Therefore, the numbers aren't swaped, it is a typo. The .0117 should be used as the minimum in 13165. I'll be sure this is corrected in revsion A of 13165 which I am currently working on. Thanks for bringing this to my attention.