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Tolerance-MAP (T-MAP)™

Rectification of Legacy Aeronautical Technical Data

Tolerance-MAP™ (T-MAP) is a precision rectification process used to restore the dimensional integrity of legacy aeronautical engineering drawings created on Mylar.

By applying photogrammetric techniques, T-MAP removes linear distortion and restores the original geometric accuracy of the technical data.

Key capabilities

  • Meets ASME Y14.31-2014 accuracy requirements of ± .005”

  • Removes linear distortion from legacy aeronautical technical data

  • Restores image integrity of legacy engineering drawings

  • Converts legacy technical data into engineer-ready CAD data for rapid 3D modeling

Engineering Accuracy

Tolerance-MAP restoration meets the dimensional accuracy requirements defined in ASME Y14.31-2014 engineering drawing practices.

ACCURACY REFERENCE

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Reference illustration showing the ±.005” engineering accuracy used in T-MAP rectification.

T-MAP for Rapid 3D Modeling

Tolerance-MAP enables legacy aeronautical technical data to be converted into accurate digital engineering geometry suitable for CAD reconstruction and model-based engineering workflows.

By correcting distortion prior to digitization, engineering models can be created significantly faster while preserving the geometric intent of the original design documentation.

From legacy aeronautical technical data (ATD) to a 3D model in half the time.

LEGACY MYLAR SOURCE

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T-MAP RECONSTRUCTION WORKFLOW

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Example workflow showing legacy Mylar engineering data converted into rectified CAD geometry and 3D model output using the T-MAP process.

Visual Comparison & Validation

Tolerance-MAP enables engineers to visually evaluate geometric correction in real time through hybrid comparison illustrations.

By overlaying original raster imagery, rectified imagery, and CAD geometry, distortion can be measured and validated prior to downstream engineering use.

HYBRID GEOMETRY COMPARISON

Comparison Layers

  • Gray — JEDMICS original image file

  • Black — T-MAP rectified image file

  • Green — JEDMICS CAD file

  • Red — T-MAP rectified CAD file

Hybrid comparison illustrating distortion correction and CAD reconstruction using the T-MAP rectification process.

Engineering Error Identification

Tolerance-MAP analysis reveals geometric distortion across the entire drawing sheet and allows engineers to identify areas requiring correction before downstream modeling or manufacturing use.

By measuring distortion across the full sheet, engineers can evaluate whether legacy technical data remains within acceptable engineering tolerances.

DISTORTION MEASUREMENT ANALYSIS

Example analysis showing sheet-wide distortion measurement and geometry verification following T-MAP rectification.

Diagram Interpretation
• Overall distortion measured at 0.031" across the full drawing sheet
• Radius deviations identified requiring engineering correction
• T-MAP rectification preserved the original geometric relationships of the circles

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