Field log · 03 May 2026 v · alpha

Every reading, to the millimetre.

LevelLog replaces the paper field book and the ad-hoc spreadsheet. Drop a benchmark on a site plan, run sessions against your laser, and trust that nothing you wrote down yesterday will be quietly rewritten today.

±2 mm avg residual
12.000 m · BM datum
live session aware
Session live
HI · 13.482 m
N
0 · 5 m
x 248.6 · y 191.3
BM · 12.000
A1 · 11.842
A2 · 11.617
A3 · 11.503
A4 · 11.565
A5 · 11.728
Plan · Kingsford Lot 14 5 pts · 1 BM
Section · field book

Built for the third decimal place.

Plate · 01

Sessions, not spreadsheets.

Move the laser, take a fresh backsight, start a new session. Old readings stay anchored to the instrument height they were taken at — never silently rewritten.

Ref · §5
Plate · 02

Plan, point, primary level.

Drop a benchmark, drop your shots, see the project’s primary level beside every marker. Tap a point for the full reading log: CL, FL, SL, DPC, FFL.

Ref · §6
Plate · 03

Cut & fill, at a glance.

Toggle the heatmap to read current, finished, or delta across the site. Pick any two points for distance, height delta, and grade in % and 1:n.

Ref · §7
Section · instrument

HI = BM + backsight. RL = HI − staff.

LevelLog snapshots the instrument height the moment a session starts, stamps every reading taken under it, and hands you a ledger you can reconcile back to the staff. Re-level whenever you need — history stays still.

Ledger · session 03
Live
BM datum
12.000 m
Backsight
1.482 m
Inst. height
13.482 m
Shot · A4
1.917 m
RL · A4
11.565 m
Δ vs. design −0.065 m
Plate · 04

Stake a new project, to your field book.

Sign in with Google, drop a plan, set the scale. Your first session is two staff readings away.

Continue with Google Google sign-in · v1
Levellog est. 2026
Lat 51.5074°N · Lng 0.1278°W Datum · AHD