Apple Macintosh Performa 577 - Manual (Page 152)

Adjustments Geometric Distortion - 31
1 Use Display Service
Utility to display the
Crosshatch I test
pattern.
2 Verify that the boxes on
the top row are the same
size as the boxes on the
bottom row, and the
boxes on the left side are
the same size as the
boxes on the right side.
Crosshatch I