Diagonal weave (pattern)

This complex pattern is made up of alternate rows of tall and short rectangles, each crossed with a diagonal stitch. It is a fairly dense pattern and works well in architectural shapes.
Further Reading

Method
Work a diagonal stitch over two vertical and four horizonal threads, top right to bottom left.
Bring your needle up in the original hole, and work three sides of a box around the diagonal stitch in a combination of straight and back stitches.
Repeat working from left to right to complete the row.
Work the next row from right to left: this time the diagonal and vertical stitches should be twice the height, so over eight threads.
Continue to work alternate rows over four and eight threads.

Structure of stitch
Embroidery Techniques
Identifying Diagonal weave (pattern)
A blackwork stitch of blocked zig-zag stitches of alternate long and short zig-zag rows.
References
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Various Authors, The Royal School of Needlework Book of Embroidery (2018) , p.145
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Becky Hogg, RSN Essential Stitch Guides: Blackwork (2010) , p.55