When an approved drawing is unavailable, measured data and photographs must clearly separate original geometry from wear or damage.
Identification
- Equipment manufacturer, model, position and part number.
- Overall photographs and installed orientation.
- Service history, failure mode and replacement urgency.
- Available old drawing, manual or adjacent-part information.
Measurement
- Overall dimensions and functional datums.
- Hole pattern, threads, flanges, connections and mating faces.
- Wall thickness, channels and inaccessible internal features.
- Measure multiple locations where wear may distort the result.
Verification
- Material identification or sample analysis.
- Weight and center of gravity for large components.
- Critical tolerances and fit confirmed against the equipment.
- Customer approval of the reconstructed drawing before production.