1 — Job details (carried into the report and the StarNet .DAT header)
2 — Fieldbook
Opening R.L. (first row, m):
Closing R.L. (only if closing onto a DIFFERENT known B.M.):
Spike length (mm):
A run that ends back on its start point (same point name) is detected as a
closed loop automatically — the closing R.L. is then the opening R.L. and this box is ignored.
Datum R.L. (m):
A datum row is ticked (Datum column), so the opening R.L. is computed
from the datum R.L. — it is filled in after Process.
+ Row
Insert row above selected
Delete selected row
Mark selected row as Tape Drop 🌡
Save fieldbook…
Open fieldbook…
Import .DAT/.GSI…
NAK2 book…
Process ▶
3 — Run schematic (not to scale)
One staff per booked row, drawn at its reduced level (rises and falls
exaggerated). Sight lines are horizontal — one line of sight per setup, with a red tick
where it reads each staff. Staffs are red/white; the orange tape at a tape-drop row hangs
the full drop and always reaches the sight line that reads it. Long runs wrap at 8 staffs
per row (a wrap never splits a tape drop; the boundary staff repeats greyed "cont.").
Redrawn on every Process.
4 — Arithmetic checks
5 — Closure
Allowable (±m√n), m:
mm — typical: 3 structures · 5 general · 30 earthworks
Distribute:
Not distributed (report only)
Evenly per instrument setup
Proportional to distance levelled
Changing this reprocesses the run immediately — the table, schematic,
report and .DAT all follow. Even: each setup carries an equal share. Distance: shares
follow the metres levelled (needs a distance on every sight). Adjusted R.L.s appear in
their own column — the raw reduction is never overwritten.
6 — Report & StarNet .DAT export
Print / PDF report
Save text report…
Stations for the .DAT (named points):
Height differences from:
Raw reduced R.L.s — tape-corrected, misclosure left for StarNet
Adjusted R.L.s — misclosure already distributed
This follows the processed run: a distributed run exports ADJUSTED
R.L.s, an undistributed run exports RAW reduced R.L.s. You can override it before
saving — note that StarNet runs its own least-squares adjustment, so exporting
adjusted values hides the misclosure from StarNet's residual tests. Tape corrections
are applied in both cases (a systematic correction, not an adjustment).
Point names are UPPERCASED and non-alphanumerics (including spaces) become _
(StarNet uses "-" as the FROM-TO separator).
Download .DAT
Preview .DAT
How the book works
B.S backsight — first reading after setting up the level (opens each setup)
I.S intermediate sight — any reading between the B.S and F.S of a setup
F.S foresight — last reading before moving the level
CP change point — F.S and the new B.S booked on the same row
🌡 TD tape drop — a change point read on the suspended tape instead of a staff;
flag it and TapeDrop corrects the B.S for temperature + calibration
Datum datum row — tick the Datum column to hold that row at a known R.L.; the whole run is
re-datumed onto it and the opening R.L. becomes a computed value
R.L. reduced level, computed on Process by Rise & Fall or Height of Collimation
(both give identical R.L.s — the choice sets the booking columns and checks shown)
1 — Setup
Tape used:
Temperature (°C):
Height transfer:
Down the shaft (known height ABOVE the station)
Up the shaft (known height BELOW the station)
2 — Station
Station final height (m):
Tape drop length (m):
Enter the height as currently computed from the UNCORRECTED tape drop.
Correction breakdown
Vertical nominal distance: --
Temperature adjustment: --
Closest calibrated nominal: --
Lab value at that nominal: --
Calibration adjustment: --
Total adjustment: --
3 — Adjusted height
Adjusted station height:
--
Change to height: --
Copy report
Save report…