- This target is the inverse polarity of 2015a USAF target. The field is chromium and the tri-bar pattern is transparent quartz glass.
- Manufactured by: Ready Optics Company
- Tests to 137 nanometer resolution.
- High Contrast Chromium on Quartz Glass
- Conforms to 1951 US Air Force MIL-STD-150A
- Starts at Group 4, Element 1; (31 µm bar width / 62µm period)
- Ends at Group 11, Element 6 (137 nanometer bar width / 274nm period)