Identifying Stainless Steel mesh

[goeslikestink]

Ok, I bought my first rba (DID) and it came with 2 grades of SS mesh but no way to identify which is which. Is there a way to tell which grade of mesh I'm dealing with? It's impossible to see which is finer with the naked eye.

Thanks Vets!

 

[tmcase]

I'm no expert on mesh but I think the more holes per inch the high the grade. Do you have a magnifying glass?