Howdy,
 
	New to the site, just a guy who does fairly repairs and occasionally basic fabrication.  Been at it a long time, but consider myself a pretty rank novice.  I've been using hand sewing awls containing thread and wanted to try using harness needles.    Finally got a copy of Stohlman's Hand Sewing and he recommends "egg eye harness needles of size 4 or 5".  Tried to go online and buy some, but the sizes don't seem to be the same, in fact they appear reversed:    their Size 4  is 48mm length X 0.9mm dia.  Stohlman's drawings look like his needles are at least 3 inches long.  What am I missing here?
 
	Thanks.