Slow: a checker reads every dimension, note and title block field by hand
Product · Engineering
DraftGuard
AI review for engineering drawings & technical documentation
DraftGuard reads your drawing packages (PDF, DXF/DWG, scans) and their documents, finds missing or inconsistent information, compares revisions and drafts documentation from your templates — and shows every finding on the sheet, with the evidence and a proposed fix.
110 mechanical + 93 electrical checks, every finding on the sheet
Solutions
Built for
The challenge
The problem DraftGuard solves
Drawing checking is done by hand, sheet by sheet, under deadline — and the errors it misses are found at the supplier, in inspection or on site, where they cost the most.
Inconsistent: what gets checked depends on who checks and how busy they are
Late: errors found at the supplier or on site cost far more than at the drawing board
Drifting documents: specifications, inspection plans and schedules no longer match the revision
Overview
What DraftGuard does
A first, complete check of every drawing and document in the project, before a human signs it off. Most checks are deterministic engineering rules; the AI only steps in where judgement is needed.
Review every sheet against ISO / ASME and NF C 15-100 practice
Compare revisions and catch changes missing from the revision table
Cross-check drawings against specifications, inspection plans and parts lists
Generate documents (DOCX + PDF) from the drawing and your templates
Build cable schedules, CCTP coverage, DOE and take-off for electrical projects
Ask the project agent — answers cite the sheet, actions wait for your confirmation
Two domains, one review agent
Built for mechanical and electrical design offices
Each domain has its own reading, rule catalog and deliverables, on the same platform.
Mechanical
Part and assembly drawings read into a structured model: title block, revisions, notes, dimensions, GD&T, threads, surface finish, parts list and balloons, views.
Title block, dimensioning, tolerancing and GD&T checks (ISO 7200, ISO 1101, ISO 5459, ISO 2768, ASME Y14.5)
Balloons ↔ parts list consistency on assemblies
Revision comparison: side by side, overlay, swipe, with a change summary
Inspection plan, part specification, change notice and traveller generated from the drawing
Electrical
Single-line diagrams, power and control schematics and layout plans read into folios, components, circuits, cables, cross-references, terminals and rooms.
Protection, cable, cross-reference and layout checks (NF C 15-100, EN 61082, EN 60204-1)
Cable schedule built from the plans and compared with yours (XLSX / DOCX)
CCTP coverage matrix, DOE index and assembly, quantity take-off
Site markups turned into a change list, redline and revision row, then verified in the next revision
Inside the product
From the uploaded sheet to the signed-off package
Real screens from DraftGuard, on a demo pump assembly and an electrical workshop extension.
01
Every value read, every value located
Each sheet becomes a structured model: title block fields, dimensions, tolerances, GD&T frames, surface finish, notes and revisions, each outlined on the drawing with its confidence.
Title block, dimensions, GD&T and notes in the Model tab
Corrections by hand, JSON and CSV export
Vector PDF, DXF and scans with OCR
02
Findings with the evidence and the fix
A datum referenced but never defined, a missing general tolerance note: each finding comes with its rule, its standard, a crop of the sheet, a recommendation and its status history.
Severity and a release score per drawing
Accept, mark false positive or set a status
Rules switched off or re-graded per project
03
Revisions compared, unrecorded changes flagged
Two revisions side by side, overlaid or swiped. The change summary lists every dimensional, note and title block change — and the ones missing from the revision table become findings.
Side by side, overlay and swipe views
Change summary by category
Comparison report in PDF
04
The drawing and its documents, cross-checked
The inspection plan, specification and parts list are read and compared with the drawing: a characteristic the drawing does not give, a dimension the plan forgets.
Drawing ↔ inspection plan, specification, parts list
Linked document and line on every finding
Proposed alignment value
05
Documents drafted from the drawing
An inspection plan generated from the drawing model and your Word template, then checked like any upload — missing values are flagged, never invented.
Inspection plan, part specification, change notice, traveller
DOCX and PDF output
Template edit by instruction
06
Electrical folios checked, finding by finding
On single-line diagrams and schematics, a breaker rated above its conductor or a socket circuit without 30 mA protection is flagged on the folio, with the evidence.
Protection, cables, cross-references, layout
NF C 15-100 / EN 61082 / EN 60204-1 based tables
Sizing findings always call for a calculation note
07
The cable schedule, built from the plans
Every cable read from the plans, with where each value comes from — and every difference with the schedule you uploaded.
Provenance for each value
Differences with the uploaded schedule
XLSX and DOCX export
08
CCTP coverage, requirement by requirement
Each requirement of the specification is matched against the plans and documents: covered, partial, not verified or contradicted, with its evidence.
Coverage status and evidence per article
Contradictions raised as findings
XLSX export
How it works
How DraftGuard works
- Step 1
Upload
Drop the drawing package and its documents: PDF (vector or scanned), DXF, DWG, images, DOCX, XLSX.
- Step 2
Read
Each sheet is read into a structured model — title block, dimensions, tolerances, notes, parts list, circuits — and every value keeps its place on the sheet.
- Step 3
Check
Deterministic rules run first; AI-assisted rules handle the cases that need judgement, gated by confidence.
- Step 4
Review & deliver
The engineer accepts or dismisses each finding on the sheet, then exports the check report, comparison report and generated documents.
Outcomes
Outcomes teams see
94.7%
of seeded drawing defects detected
100%
of seeded revision changes found
97.4%
of drawing ↔ document mismatches detected
100%
of electrical cable schedule rows rebuilt from the plans
Measured on our benchmark of synthetic drawing sets with known, seeded defects (40 mechanical projects, 30 electrical projects). Per-rule precision and recall are published in the product.
Use cases
Where DraftGuard fits
Pre-release drawing check
Every drawing gets a complete first check before it goes to the checker, the supplier or the workshop.
Revision control
See every change between two revisions, and the ones nobody wrote in the revision table.
Inspection & quality documents
Inspection plans and specifications generated from the drawing, and kept consistent with it.
Electrical tender & handover
Cable schedule, CCTP coverage, take-off and DOE prepared from the plans instead of by hand.
Site feedback
Marked-up plans from site become a reviewed change list, a redline and a revision row.
Supplier drawing intake
Check incoming drawings and scans against your standards before you accept them.
Under the hood
- ISO 7200
- ISO 1101
- ISO 2768
- ASME Y14.5
- NF C 15-100
- EN 61082
- EN 60204-1
- PDF · DXF · DWG · scans
- DOCX · XLSX
- On-premise (Docker)
- Claude AI
FAQ
Frequently asked questions about DraftGuard
PDF drawings (vector or scanned, with OCR), DXF, DWG (through the ODA converter) and images for drawings; DOCX, XLSX, PDF, CSV and text for documentation.
No. It takes the repetitive checks off their desk and catches omissions early; the engineer reviews each finding and keeps the final sign-off. Sizing still requires a calculation note.
Most checks are deterministic, explainable engineering rules. Each finding shows the rule, the standard, the evidence on the sheet and a proposed fix, and precision and recall are measured per rule — including on your own drawings, from your reviews.
Yes. DraftGuard deploys on-premise with Docker; your drawings stay on your servers, except the AI calls. Without an AI key every deterministic feature still works.
Yes. Rules can be switched off or re-graded per project, and documents are generated from your own Word templates.
See DraftGuard on your own drawings.
Book a 30-minute live demo: we run DraftGuard on a drawing package of yours and walk you through every finding.