Plain Lab · notebook
Level Book
A5 level book, ninety-six pages ruled into eight columns for back sight, intermediate sight, fore sight, rise, fall, reduced level, distance and remarks.
Specification
- Trim
- 148 × 210 mm · 5.827 × 8.268 in
- Pages
- 140
- Leaves
- 70
- Sheets
- 35
- Signatures
- 7 × 20pp
- Spine
- 8.01 mm
- Paper
- white
- Ruling
- graph
- Ruling pitch
- 5.00 mm · 14.17 pt
- Rows per page
- 34
A chainman calls a reading and a surveyor has about as long as the next sight takes to arrive to write it down correctly. Eight columns fix where each number goes before the sight is called: back sight, intermediate sight, fore sight, rise, fall, reduced level, distance, remarks. Nobody stops to rule a table in the field.
Ninety-six pages carry that table. Behind it sit thirty-three pages of squared paper at 5.0 millimetres, thirty-four rows to the page, for the sketch of the run and the arithmetic that checks it.
The page does not check the reduction for you. It only gives the columns enough room, in the same order every time, so a mistake shows up as a number in the wrong place rather than a number nobody can find.
What is inside
- Levels
- 96pp
- Eight columns in a fixed order: back sight, intermediate sight, fore sight, rise, fall, reduced level, distance, remarks.
- Sketch
- 33pp
- Squared paper at 5.0 mm for the run sketch and the check arithmetic.
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
- Squared Insert 5 mmSame ruling, other trimgraph at 5.0 mm: 30 lines at 5x7 against 34 at a5
Questions
What are the eight columns?
Back sight, intermediate sight, fore sight, rise, fall, reduced level, distance, remarks.
How big is it?
A5, 148 x 210 mm, 140 pages, 8.01 mm across the spine.
What is the squared section for?
Sketching the run and working the arithmetic that checks the reduction, at 5.0 millimetres, thirty-four rows to the page.
Does it calculate the reduced level for me?
No. It gives every reading a column of its own. The arithmetic is still the surveyor's.
Is it dated?
No.
The next morning we rode to the mines, which are situated at the distance of some leagues, near the summit of a lofty hill.
