Released by Präzisionsoptik Gera GmbH, the eight-page catalog “Standard-Microstructures” provides technical specifications for eyepiece graticules, including the crosshair types for integration into standard microscope eyepieces, and the scale types for integration into measurement systems. With numerous photographs, it presents US Air Force resolution targets, the Siemens star graticule for the evaluation of optical systems, and targets for the calibration of optical systems in reflected or transmitted light. Downloadable from the company Web site, it also includes stage micrometers, glass scales, pinholes, a cell finder and a surface defect pattern.