
Plain Lab · logbook
Mechanical Design Notebook
Forty-eight unruled sketch pages, eight project pages, and notes for a mechanism worked from concept to dimension.
Specification
- Trim
- 148 × 210 mm · 5.827 × 8.268 in
- Pages
- 100
- Leaves
- 50
- Sheets
- 25
- Signatures
- 5 × 20pp
- Spine
- 5.72 mm
- Paper
- white
- Ruling
- blank
- Ruling pitch
- 4.94 mm · 14.00 pt
- Rows per page
- 35
Forty-eight sketch pages open the notebook, and they are unruled on purpose. A gear train drawn at an angle, then drawn again from above, does not sit neatly inside a printed line, and a lined page fights the second drawing instead of holding it.
Eight project pages follow, one to a design, for the concept, the dimensions, the materials, the mechanism and the revision history. A revision written down next to the sketch it replaced is a revision somebody can still explain a year later.
Thirty-one pages of plain notes close the book, for the calculation that does not belong on a project page. It carries no printed drawing standard or tolerance convention. Those come from the standard you design to, ISO or ASME or your employer's own, and a blank page cannot choose one for you.
What is inside
- Sketch
- 48pp
- Unruled, so a mechanism drawn from two angles is not fighting a printed line.
- Project
- 8pp
- One page to a design, for the concept, the dimensions, the materials, the mechanism and the revision.
- Notes
- 31pp
- Plain paper, for the calculation that does not belong on a project page.
- Reference
- 13pp
- The book closes with reference pages: length and angle conversions from definitions, emergency numbers checked against two sources.
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
- Inventory LedgerAlso in Plain Lab
- CNC Machining LogbookAlso in Plain Lab
- Quality Inspection BookAlso in Plain Lab
- Leather Production LogbookAlso in Plain Lab
Questions
What does a project page cover?
The concept, the dimensions, the materials, the mechanism and the revision history.
What ruling are the sketch pages?
Unruled. Sketch pages carry no lines at all.
How big is it?
A5, 100 pages, spine 5.72 mm, unruled throughout.
Is it dated?
No. Open it with your first concept sketch.
Does it set a drawing standard or tolerance convention?
No. Dimensioning and tolerancing conventions come from the standard you design to, ISO or ASME or your employer's own, and a blank page cannot choose one for you.
The primary shadow is always the basis of the derived shadow.


