What is the difference between the mesh counts/different meshes on the screens?

What is the difference between the mesh counts/different meshes on the screens?

 

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A lower number means a coarser mesh count, a higher number means a finer mesh count. You will need to select the correct mesh count for the artwork you have produced. 43T is used most commonly for general textile printing. Please note that we use the European system therefore mesh counts is threads per cm, sometimes you may see the American system being used which is threads per inch.Read our online buyers guide – page 15 for a breakdown of each count and their ideal use.

via Wicked Printing Stuff, your home for screen printing equipment and supplies – FAQs.