People often think of Postscript as a file format, but it's really a programming language, ideal for producing various forms of ruled paper. The .ps files below were written by hand; the .pdf versions were then made using ps2pdf. It's all meant for A4 paper, but I haven't used any DSC in the Postscript.
|Cycles in abscissa|
|Cycles in ordinate||2||ps, pdf|
|3||ps, pdf||ps, pdf|
|4||ps, pdf||ps, pdf|
These have the traditional 3:2:3 ratio for the ascender space, x-height, and descender space, along with the 55 degree slant. The thin-lined version is meant for writing on directly, for practice. The thick-lined version is meant to be able to show through another sheet of paper.
|x-height /in||Thin lines||Thick lines|
|1/4||ps, pdf||ps, pdf|
|1/6||ps, pdf||ps, pdf|