Ah, so the rulebook is referring to American standard, then? I should have explained better in my original post, but I was typing on my phone last night.
The site for chainmail rings lists both Standard and American gauges, and I would like to use the 14 gauge, 5/8" inner diameter necessary to achieve a 3 point armor rating. According to their website, however, 14 Standard Wire Gauge = 12 American Wire Gauge.
Also, the 14 gauge Standard (12 gauge American) comes in 5/8" inner diameter, but the 14 gauge American (16 gauge Standard) has a maximum inner diameter of 7/16'' .
I thought that American Wire Gauge was used in both America and Canada, but theringlord.com, a Canadian business, primarily lists their rings in Standard, with a conversion to American for each entry.
I guess I'll just go with 14 Gauge Standard. I've bought rings from this site several years ago, and I don't recall them showing two different gauges before. Just thought that I'd double check before dropping over a hundred dollars and 20-30 hours of weaving time. Thanks!