FITS MOST EYEPIECES || Straight graticule/reticle measures 19mm in diameter and fits to most microscope eyepieces DURABLE & STURDY || Made of high quality glass and packaged in a protective outer casing USED TO MEASURE || An essential tool in microscopy used for measuring the lengths of specimens or the distances between points on a variety of different shaped objects 10 x 0.1MM || Eyepiece graticule has an overall length of 10mm with 100 subdivisions of 0.1mm - When used with a x10 objective, each division will represent 10 microns on the specimen TRANSPARENT || Completely transparent to allow an unobstructed view through a lens Straight graticule/reticle measures 19mm in diameter and fits to most microscope eyepieces. Made of high quality glass and packaged in a protective outer casing. An essential tool in microscopy used for measuring the lengths of specimens or the distances between points on a variety of different shaped objects. Eyepiece graticule has an overall length of 10mm with 100 subdivisions of 0.1mm. When used with a x10 objective, each division will represent 10 microns on the specimen. Completely transparent to allow an unobstructed view through a lens. Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.