Flag Aspect Ratio Checker
Actual flag hoist:fly ratio against explicitly verified reference, not merely generic aspect formatting.
Description
Flag proportions conventionally distinguish hoist from fly.
Flag proportions conventionally distinguish hoist from fly.1
Comparing the observed hoist-to-fly ratio with a verified reference exposes the signed shape discrepancy.
When to use Flag Aspect Ratio Checker
Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Establish the flag dimensions, orientation, specification, palette, or visual annotations needed for this particular calculation.
How to use Flag Aspect Ratio Checker and understand its results
- Establish the flag dimensions, orientation, specification, palette, or visual annotations needed for this particular calculation.
- Enter observedHoist, observedFly, referenceHoistUnits, referenceFlyUnits, following the field table and rules below, then run the tool.
- Read result. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
- Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedHoist | Observed hoist | number | Required |
| observedFly | Observed fly | number | Required |
| referenceHoistUnits | Reference hoist units | number | Required |
| referenceFlyUnits | Reference fly units | number | Required |
Enter positive observed and reference dimensions. Divide each hoist by its fly, then subtract reference ratio from observed ratio. No tolerance or reduced integer ratio is inferred.
difference=H_obs/F_obs−H_ref/F_ref Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Calculated observation or reference | object |
| result.observedHoistToFly | Observed Hoist To Fly | number |
| result.signedRatioDifference | Signed Ratio Difference | number |
{
"input": {
"observedHoist": 100,
"observedFly": 150,
"referenceHoistUnits": 2,
"referenceFlyUnits": 3
},
"output": {
"result": {
"observedHoistToFly": 0.6666666666666666,
"signedRatioDifference": 0
}
}
}Limitations and assumptions
The calculation uses supplied geometry, observations, or annotations. It does not establish an official construction specification, national identity, or universal design quality.
Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related review, use Proportion Compliance Tolerance Checker (±2%): Relative proportion error compares an observed hoist-to-fly ratio with a verified target ratio. It measures shape agreement under your tolerance rather than separate length tolerances. For a complementary step, use Quartered Field Quadrant Area Calculator: Off-center vertical and horizontal splits produce four unequal rectangular quadrants. Reporting their areas in viewer row order preserves the layout being measured.
References
-
Flag Aspect Ratio Checker — tool.io
Similar or alternative tools
- Proportion Compliance Tolerance Checker (±2%)
Relative proportion error compares an observed hoist-to-fly ratio with a verified target ratio. It measures shape agreement under your tolerance rather than separate length tolerances.
- Quartered Field Quadrant Area Calculator
Off-center vertical and horizontal splits produce four unequal rectangular quadrants. Reporting their areas in viewer row order preserves the layout being measured.