Leatherworker.net has become an international success. One problem, we and our industry are mired in a combination/confusion of Imperial/Metric/Trade measurements. This can be a problem when trying to talk about needles and threads. The following table deals primarily with twisted multifilament threads of the Nylon and Polyester varieties. Needle and Thread.htm is attached, please bring it up in your browser and save the page to disk. Needle and Thread.htm Art