Anglinarcher - AndyUK may well be a beginner when it comes to lure building, but he is certainly not new to engineering, and fully understands what I am talking about, otherwise I would not have embarked on this tedious and time consuming project. The idea is that I take care of the complexities of the many calculations, leaving the builder with a few measurements to make and a couple of numbers to play with.
My 2DP scale is repeatable, and that is the most important factor, and yes, I have a certified 500g mass. I also have a250ml class-A HERMA graduated measuring cylinder, and with 1c