Some folks asked about this chart - ISO 12233 - as they wanted the slanted edges to make certain measurements . It just happened I have them ready:  Limited number of these targets is available in MF format at my Etsy store https://www.etsy.com/shop/SilverKnits Note these targets are nor of high resolution, they are approximately  ~ 20 lp/mm due to specifics of production process.  Certain elements cannot be resolved properly - those areas are marked with red eclipses on the photos below. If you need high resolution you may use my 35 mm targets. (see also  https://www.edmundoptics.com/p/1X-Enhanced-I3AISO-12233-Digital-Camera-Resolution-Test-Chart/15688 ) The below pictures were taken at magnification x40 with the optical microscope.