I was hoping to see if there was any chat, "first hand", about what people used to determine specific gravity. Ohaus makes a mechanical scale that measures down to the hundredth of a gram, which would seem to be sufficient. It only goes to 331grams, I think...I would like 3-4 lbs., and I would really like to stick with a mechanical unit. I do not mean to be trite with the title, just have a hard time doing stuff according to hoil. ....and understanding what to do in the net....shouldn't there be a dip-thingy over "your"?