We are offering pick glasses. Pgls 006 i2tm (pick glass with light & measuring scale) pgls 006 i2tm is a handy and accurate instrument for determination of thread density (threads per inch) promptly and thus eliminates eye fatigue. It consists of a microscope having a graduated scale for measurement. A powerful light source for proper focusing and the main unit that combines the above two units complete unit is supplied in a beautiful carrying case, which can be taken any where to check threads per inch instantly. Related standards: iso 7211 bsen 1049 astm d3775