Check the listing for details. W.S.Tyler - No.120 - Standard Testing Sieve - 125 Micrometer. Condition: Used. Listed at 34.00 USD. This W.S. Tyler No. 120 Standard Testing Sieve has a mesh size of 125 micrometers, making it perfect for scientific experiments and research. The sieve has been previously owned but is in good working condition, ready to be used by the next owner. The sieve belongs to the Collectibles and Science & Medicine categories, specifically in the subcategory of vintage scientific instruments and other equipment. It is a valuable addition to any laboratory or collection.