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Planar True-Position Deviation Calculator — result sheet
Calculate diametral planar true-position deviation from measured X and Y offsets and optionally compare it with an entered tolerance.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Radial offset = √(Δx²+Δy²); planar diametral true-position deviation = 2×radial offset; pass = deviation ≤ entered tolerance.
The result is the common two-dimensional diametral position-deviation calculation from measured offsets. It keeps the tolerance as a visible comparison input and does not infer datums, material condition modifiers, bonus tolerance, projected zones, feature size, or a full inspection decision.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- X deviation from nominal — mm; minimum -1000000; maximum 1000000
- Y deviation from nominal — mm; minimum -1000000; maximum 1000000
- Entered diametral tolerance — mm; minimum 0; maximum 1000000
Worked example
| Input | Value |
|---|---|
| X deviation from nominal | 0.03 |
| Y deviation from nominal | -0.04 |
| Entered diametral tolerance | 0.15 |
Radial offset = 0.05 mm; planar diametral deviation = 0.10 mm; it is within the entered 0.15 mm tolerance.
Assumptions and limits
- X and Y deviations use the same length unit and are measured from the basic or nominal feature location.
- The feature is evaluated in a planar circular position zone, so the radial offset is doubled to express a diametral deviation.
- Datums, MMC/LMC/RFS modifiers, bonus tolerance, form error, axis tilt, measurement uncertainty, and ASME acceptance rules are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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