Thanx for the earlier answer, however how do you relate a 3,4,5,6 mm diameter measurement the to a weight measurement of 1/32 1/16 1/8 1/4 oz
Millimeter measures in grams are more precise.
To choose the right Fishing Rod weight you can use this rule: the right Fishing Rod's weight depends on how big and/or how heavy the lure you'll be using, and/or how big the fish you wish to catch. Not everyone buys several rods to match a weight of lure.Dr.Lawrence
The only way I could find is to google ounces to grams and enter the weight. It will give you the grams.FishUSA StaffProfessional Angler