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QA-61 ?
Includes a slanted edge, an alphanumeric
resolution chart, a Landolt Ring chart,
and gray step patches. Horizontal, vertical
and slanted Ronchi patterns are provided
at 6 to 40 c/mm. Applied Image has also
provided (as permitted in section 4.1.2 of
the standard) a T-100 Digital Electronic Pixel
Target which has horizontal, vertical and
slanted bars in widths from 0.1 to 1.0 mm
(width to length ratio is 1:5).