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A5 Engineering Computation Pad standing closed on a plain surface, composition-style cover with a tiled illustration field and a label plate, under seven millimetres thick.

Plain Lab · notebook

Engineering Computation Pad

A faint five-millimetre field, a title block at the head of the page, and a heavier margin down one side, for working shown rather than hidden.

Price

from Rp 59.000

Softcover, French link sewing. Printed and sewn to order.

Ships in 6–14 business days · 7-day returns

4.9 from 85 buyer reviews of Hibrkraft

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Every cover and binding option is quoted when you order.

Specification

Type
Notebook
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
computation
Rows per page
34
Dating
Undated

Build it

Rp 59,000

The rule sits at 5.00 mm, thirty-four rows down the page, faint enough to disappear once a calculation is written over it. A title block runs across the top of every page. The margin on one side is drawn heavier than the rest, wide enough for a running note beside the working rather than squeezed into it.

Engineering computation paper earns its name from that heavier margin, not from anything printed on the field itself. It does not check an equation or flag a unit that doesn't cancel. It gives the working room to be shown in full, which is usually the part a torn-off scrap of paper skips.

The page holds the arithmetic. It does not do it.

What is inside

Computation pages
109pp
A 5.00 mm field with a title block and a heavier margin, for working shown in full.
Reference
11pp
Conversion tables computed from definitions and emergency numbers checked against two sources.

In every book

The same six pages open every book: your details, who to call, the signs to point at when you have no shared language, and the map. They sit at the front because the moment you need them is not the moment to be flicking through.

How to use it
One page describing this book, not a different one.
This book belongs to
One page for your name and number, so a book that goes missing can come back.
My details
Blood group, allergies, who to call. Written once, carried everywhere.
Emergency numbers
Forty countries, taken from Wikidata property P2852 (CC0), agreed across two sources, every row carrying its QID. Numbers change and a book does not — verify locally on arrival.
Point at this
A pictogram grid captioned in English above and Indonesian below, for when there is no shared language.
World map
Natural Earth 110m, public domain, equirectangular, with UTC hour meridians computed from the projection rather than from a timezone database. For orientation and for pointing at, not a navigation chart.
Conversion tables
Computed from definitions — 25.4 mm to the inch — and not copied from anywhere, so every row can be checked by anyone holding the book.
Pen test leaf
The last page, printed for it on purpose. Every notebook is used this way; printing it deliberately is cheaper than losing the last leaf to it by accident.

The film

Page by page

A vertical film, 52 seconds: the cover, the ruling page, then 5 reference pages. Synthesised ambient bed, no dialogue — captions in three languages.

A vertical film from our own bench — this page contacts nobody's server to play it, and downloads nothing until you press play.

What is inside this book?

Five pages from the Engineering Computation Pad shown as cards: a computation page with title block, a blank computation page, a divider, a conversion table, and a reference page.
Five pages rendered from the print file: a computation page with the title block filled in as a sample, a blank one, a divider, a conversion table, and the reference section. The faint field is the product. A field too dark competes with the working; this one is set to sit underneath it.
Specification card for the Engineering Computation Pad listing 109 computation pages at 5.00 mm, 34 rows, title block, 120 pages total, A5 trim.
One hundred and nine computation pages, field ruled at 5.00 mm, thirty-four rows each, title block and heavier margin on every one. Eleven pages of reference matter at the back, with conversion tables computed from definitions and emergency numbers checked against two independent sources. One hundred and twenty pages total, A5, six sewn signatures of twenty.
Computed from definitions — 25.4 mm to the inch — and not copied from anywhere, so every row can be checked by anyone holding the book. — Engineering Computation Pad
Conversion tables
Forty countries, taken from Wikidata property P2852 (CC0), agreed across two sources, every row carrying its QID. Numbers change and a book does not — verify locally on arrival. — Engineering Computation Pad
Emergency numbers
One page for your name and number, so a book that goes missing can come back. — Engineering Computation Pad
This book belongs to
A pictogram grid captioned in English above and Indonesian below, for when there is no shared language. — Engineering Computation Pad
Point at this
Natural Earth 110m, public domain, equirectangular, with UTC hour meridians computed from the projection rather than from a timezone database. For orientation and for pointing at, not a navigation chart. — Engineering Computation Pad
World map

The PDF of this book.

We do not sell the design or the PDF. Download it free, with no conditions at all, not even tracking. What we sell is the book, a real object that is genuinely useful and can help your life.

Download PDF PDF · 120 pages · 0.4 MB

Made at the Hibrkraft bindery, Bogor · about the maker

Books that sit alongside it

Questions

What is engineering computation paper?

A faint field ruled at 5.00 mm with a title block across the top and a heavier margin down one side, meant for working shown in full rather than crammed to the edge.

How fine is the field?

5.00 mm, thirty-four rows to the page.

What goes in the title block?

Whatever heads the calculation: a job number, a date, a revision, your name. The block is ruled; what you write in it is yours to decide.

Is it dated?

No.

How big is it?

A5, 120 pages, 6.86 mm across the spine.

Every quantity is intellectually conceivable as infinitely divisible.
Leonardo da Vinci, The Notebooks of Leonardo da Vinci, c. 1500

Price

from Rp 59.000

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The Hibrkraft team outside the workshop in Bogor
The Hibrkraft team, Bogor
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