Eight-Figure Grid Reference Precision Meter Checker
8-figure local grid precision: 10m square, not observed accuracy or validated coordinate.
Description
Report nominal 10-meter cell resolution for an eight-digit local grid reference.
An eight-figure numeric grid reference divides its digits equally between easting and northing. Under the tool's assumed metric grid convention, that written resolution corresponds to a nominal 10-meter cell.
When to use this tool
Report nominal 10-meter cell resolution for an eight-digit local grid reference. Use it when the input measurements and conventions below match the operation you need.
- Prepare numericGridReference, respecting the measurement basis and boundaries below.
- Compare the worked example with your intended operation before reusing its result.
How to use the tool and how it works
- Enter every field in the input table using the stated units and exact supported selector spelling where applicable.
- Run the tool. Correct input errors before interpreting an output.
- Read the result fields below; use accompanying flags and the stated sign, boundary or model convention when interpreting a number.
The tool accepts exactly eight ASCII digits and returns nominalCellWidthMeters as 10 and actualAccuracyEstablished as false.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| numericGridReference | Numeric grid reference. | Text |
| Output field | Interpretation |
|---|---|
| result | Object containing the following named result fields. |
| result.nominalCellWidthMeters | Nominal cell width meters; use the stated units and sign convention. |
| result.actualAccuracyEstablished | Always false; written grid resolution does not establish measurement accuracy. |
{
"input": {
"numericGridReference": "12345678"
},
"output": {
"result": {
"nominalCellWidthMeters": 10,
"actualAccuracyEstablished": false
}
}
}Limitations and assumptions
- The grid square and coordinate system are external assumptions. Written resolution does not establish the accuracy of the underlying observation, and no geographic position is calculated.
- Every declared field is required and unexpected fields are rejected. Numeric inputs must be finite; input errors are distinct from a valid false result or an explicitly qualified output.
- Extremely large inputs and nonfinite or excessively large outputs are rejected. List positions reported by the tool use zero-based indices unless stated otherwise.
Alternative or Complementary methods
For a map-layout decision, inspect the rendered map at its intended size as well as its numerical dimensions. For classification or coordinate work, retain the chosen boundary and coordinate conventions with the result. Compare the scope of the nearby tools below before substituting one.
References
Similar or alternative tools
- Six-Figure Grid Reference Precision Meter Checker
6-figure local grid precision: 100m square, not observed accuracy or validated coordinate.
- Grid Reference Digit Padding Normalizer
Left-pad explicitly interpreted local coordinate integers; does not append precision digits or infer a full grid square.