FieldScale

FieldScale – Blueprint Measurement & Annotation Tool

Built by a trade professional, for trade professionals. Stop balancing your laptop on one arm, stop spending thousands on overly-expensive software, simply reach into your pocket. FieldScale is purpose-built for the job site, not the office. Load any PDF blueprint or floor plan and calibrate to scale, measure, mark up, sign off, all without breaking stride.
Wherever you are, FieldScale is for you.

Measure:
Imperial-first with feet, inches, and fractional precision — or switch to metric
Manual calibration or AI-assisted auto calibration that reads scale notation automatically
Snap-to-line geometry for accurate point placement on CAD/Vectorworks exported PDFs
Chain measurement mode for irregular paths and room perimeters
Polygon close for instant area calculations
Angle finder — place a three-point angle anywhere on the drawing
Built-in imperial calculator for rapid calculations
Export measurements to PDF, PNG, or CSV files

Annotate:
Draw rectangles, clouds, arrows, highlights, and freehand markup directly on the plan
Add text notes, date stamps, and approval stamps
Sign and place your saved signature — store multiple signatures for reuse across any plan
Place and label counters to tally quantities of any symbol on the drawing
Move and resize any annotation with a long-press; undo and redo any step
All annotations persist between sessions and export with the plan

Built for the field:

Works entirely offline
Photo Mode (Beta) — photograph a physical drawing and use it just like any of your other PDFs
Organize plans in folders; merge multi-page sets

Designed by a tradesman, built around how the blue-collars actually work — on their feet, often with one hand, reading and marking up plans on the go.
FieldScale is fast, accurate, and reliable. New features are being added every month. Try it today.


FieldScale is currently in early release and very much still a work in progress. Everything is built by one carpenter in my (limited) spare time. Any and all feedback is very welcome — use the [Send Feedback] option in Settings. Thank you.