The S18 Brightfield Stage Micrometer features graduated metric and English scales for the calibration of measurement instruments across a wide range of magnifications. This flexible graduated scale stage micrometer is suitable for low magnification, stereo inspection microscopes to higher magnification compound microscopes. It features dual scales of 25 mm or 1 inch and graduated divisons, fine for low magnification, mid for medium magnification, and large for high magnification. It has high definition, chrome on glass image. The scales are centered on all glass slide 76 mm x 25 mm x 1.5 mm thick.