Fibre Thickness Measurements.

I've been trying to practice using my digital microscope - by doing some fibre thickness measurements. Like so many things, this takes a bit of getting used to, and is not quite as easy or straightforward as one might expect... starting from getting things focused properly, to taking a good measurement of the rather fine fibres. It would help to have a greater magnification to have less margin for error (one pixel in or out does already make a difference), but then it's even harder to get a proper focus, and there's fewer fibres per image...

Anyway, here's a picture for you so you can see how that looks:



 
This is the fibre I'm using for the corded skirt, the cord part. I suspect that the measurements I took are a little bit high, because I have another kind of fibre where I know the micron count, and my measurements were consistently higher than the count that was listed... so, well, probably needs some more practice, and some calibrating of my own eye, and possibly I need to move that one pixel inside instead of outside.

Also... taking these measurements is quite time-consuming! Especially regarding the fact that you need to take measurements from about 100 fibres, randomly selected, to get something like a proper histogram of the fleece (or fleece part) that you are looking at. I only took a random sample of some few fibres, and I probably won't go for the 100 for now. There's other things to do that are more important right now (and I know already that the fibre profile of the stuff I can get does not match the Bronze Age sheep...)