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Combine over-one and over-two areas
Place both scales on a common fabric-thread grid. An over-one area contains twice as many stitch positions per side as an over-two area of equal physical size.

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Place both scales on a common fabric-thread grid. An over-one area contains twice as many stitch positions per side as an over-two area of equal physical size.
Before you start
Have the chart key, chart width and height, fabric thread count and threads crossed by each stitch. Keep floss strands separate from fabric threads.
Try this example
A ten-by-ten over-two block spans twenty fabric threads each way. Its matching over-one detail occupies twenty-by-twenty positions, not ten-by-ten.
Check your result
- Count from two independent reference points before filling a large area. Verify the outer stitched dimensions on the actual ground; include finishing fabric separately.
- Changing fabric count changes physical size, not chart complexity. Fractional stitches, mixed scales and non-square grounds need explicit chart instructions.
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