Plain Lab · notebook
Semi-Log Notebook
A5 semi-log paper, one logarithmic axis and one evenly divided axis, eighteen rows to the page.
Specification
- Trim
- 148 × 210 mm · 5.827 × 8.268 in
- Pages
- 120
- Leaves
- 60
- Sheets
- 30
- Signatures
- 6 × 20pp
- Spine
- 6.86 mm
- Paper
- white
- Ruling
- log
- Ruling pitch
- 9.17 mm · 26.00 pt
- Rows per page
- 18
One axis on this page does not move at a fixed distance for a fixed step. It moves by ratio, so the space between one line and the next shrinks as a value climbs from one to two and widens again on the approach to ten, before the pattern starts over one decade up. The other axis stays exactly as ordinary as a ruled row ever is, 9.17 millimetres apart, eighteen to the page.
A quantity that grows by doubling rather than by adding a fixed amount runs off the edge of ordinary squared paper within a few steps. Plotted against the log axis instead, the same growth can sit on something close to a straight line, which is the entire reason this ruling exists rather than another sheet of squares.
A straight line on this page is not proof of anything on its own. It is only easier to read than the curve it replaced.
What is inside
- Plots
- 110pp
- One axis ruled by ratio, one axis ruled evenly, 9.17 mm between the printed rows.
- Reference
- 10pp
- Conversion tables computed from definitions, and the pen test leaf.
The film
Page by page
A vertical film from our own bench — this page contacts nobody's server to play it, and downloads nothing until you press play.
Real pages
Made at the Hibrkraft bindery, Bogor · about the maker
Books that sit alongside it
- Storyboard NotebookAlso in Plain Lab
- Polar Grid NotebookAlso in Plain Lab
- Two-Point Perspective PadAlso in Plain Lab
- Manuscript NotebookAlso in Plain Lab
Questions
Which axis is logarithmic?
One of the two. The other stays evenly divided, so a ratio and a fixed step can be read against each other on the same page.
How big is it?
A5, 148 x 210 mm, 120 pages, 6.86 mm across the spine.
How many rows to a page?
Eighteen, 9.17 millimetres apart.
Is there a plain section for other notes?
Yes, a short run of lined pages at the back.
Is it dated?
No.
What is called bank money, is always of more value than the same nominal sum of common currency.
