For those who are using your pasta machines and need to know what distance your stamp/imprint blade should be. You can use this guide. These are Standard pasta machine settings.
Extra Thin - .5mm
Thin - 1mm
Medium/Thin - 1.25mm
Medium - 1.5mm
Medium/Thick - 2mm
Thick - 2.5mm
Extra Thick - 3mm
Play around with the settings and see what works best for you
Yes. They are usually numbers 0-9. However, depending on the brand of the pasta machine 1 can be the thinnest on PM 1 and 1 can be the thickest on PM 2.
I have a Shule pasta machine 7 is the thickest. The more popular machine Atlas is the opposite where 0 is the thickest.