Gloria, I’ve been doing macrame since the 70’s also! I’m still doing it and loving it more than ever. it’s like riding a bike.. you just get better at it! keep up the good work ?

Oh boy! You can take a ruler with mm markings and measure the width across the piece of cord and that’s the size in mm. Then to tell how the ply amount, just untwist a small piece of the plied cord and you’ll be able to see the amount. I recommend labeling it once you figure it out, or write down the measurements and tape a small piece of each type of cord next to it so you won’t forget later on. Good luck!