Lined paper, 8 mm ruling, A4

What this sheet is

A lined ruling at 8 mm, drawn on A4, which is 210 mm across and 297 mm down. The writing area inside the margins takes 23 steps of 8 mm across the page and 34 down it, 782 cells in all, and a lined ruling draws the horizontals of that grid and nothing else: 35 rules, each one running the full width between the margins.

The 8 mm is the figure the file is built from, centre to centre, rather than a description written afterwards. Every rule is placed from that measurement, so the gap between two lines on the print is the gap the page claims.

The ruling is centred in the writing area, so the fraction of a step left over once 34 of them have fitted is split between the head and the foot of the sheet instead of piling up at one end. A page with a wide band above the first line and none below the last reads as a mistake even when every rule on it is exactly where it should be.

Printing it at true size

The commonest way to end up with the wrong paper is not a bad file. It is a print dialogue set to Fit to page. Asked to put an A4 sheet onto US Letter, it scales the whole page to 94.1%, and the ruling goes with it, so the 8 mm spacing comes out at 7.526 mm. The other direction is gentler and no more honest, Letter onto A4 landing at 97.3%. Neither prints a warning.

Set the scale to 100%, or Actual size, and switch off any shrink-to-fit option the dialogue offers. Then check the print rather than trusting it. The bar in the foot margin is drawn to a stated length and labelled with that length, so a ruler laid along it settles the question in a moment. If the bar reads short, the dialogue scaled the sheet, and every line on it is short by the same fraction.

Why the line count is not fixed at 35

The 35 rules are what fits this sheet as it stands, not a property of the 8 mm spacing. The lines are drawn into whatever depth is left once the margins have taken theirs, so anything that eats into that depth changes the count.

Add the name and date band and the writing area starts lower down, and fewer rules fit. Change the paper to A5 or Legal and the depth changes again. The bench redraws and recounts each time, which is why the count is quoted alongside the spacing rather than in place of it: the spacing is the promise, the count is the consequence.

What else the bench will set

This is a tool rather than a fixed file. The spacing steps through the sizes a lined ruling is drawn at, and can be given in inches instead of millimetres. The paper can be A4, Letter, Legal or A5, upright or turned on its side. The ink is grey, blue or black. A red margin rule can be dropped down the left, a name and date band added at the head, and the measuring bar itself switched off once the print has been checked.

The sheet redraws as each control is set and comes away as a PDF, a PNG or an SVG. All of it is drawn in your own browser: nothing is uploaded and nothing is stored.