Perforation Gauge Stamps per 2cm Calculator
Count hole-to-hole intervals, not holes, on a measured straight edge; normalized per20mm. Caller independently verifies observations, reference edition, units and applicability; not a grading-service certificate, authentication, conservation treatment, actual market price or legal/insurance entitlement.
Description
A perforation gauge expresses the number of tooth intervals over twenty millimetres.
A perforation gauge expresses the number of tooth intervals over twenty millimetres.1
This calculator scales a measured interval count, which differs from counting the holes at both ends.
When to use Perforation Gauge Stamps per 2cm Calculator
Use this tool when you need to summarize the supplied collecting records or matched observations. Prepare independently verified observations, reference edition/context, and matching units or currency basis.
How to use Perforation Gauge Stamps per 2cm Calculator and understand its results
- Prepare independently verified observations, reference edition/context, and matching units or currency basis.
- Enter observedIntervals, measuredLengthMm, following the field table and calculation rules below, then run the tool.
- Read perforationGauge. For result objects, inspect the nested output fields below, including any missing evidence or selected indices.
- Correct any input issues and run again. Before using a successful result, review its units, signs, evidence coverage, and stated model or reference assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedIntervals | Observed intervals | number | Required |
| measuredLengthMm | Measured length mm | number | Required |
Require positive measured length in millimetres and a nonnegative safe-integer count of intervals. Return twenty times interval count divided by measured length. Zero intervals gives zero; the input does not determine a conventional rounded catalogue gauge.
gauge=20×intervalCount/measuredLengthMm Read these symbols with the field meanings and branch or reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| perforationGauge | Perforation gauge | number |
{
"input": {
"observedIntervals": 12,
"measuredLengthMm": 20
},
"output": {
"perforationGauge": 12
}
}Limitations and assumptions
Observations, reference edition, and applicability are independently supplied. Arithmetic and reference summaries do not provide authentication, a certified grade, or an actual market price.
Missing required fields, unknown fields, wrong types, and violated calculation rules return input issues. Numeric values must be finite; nonfinite numeric outputs are rejected.
Alternative or Complementary methods
For a related task, use Perf Count from Hole Spacing mm Converter: The spacing between adjacent perforation holes determines the equivalent number of intervals over twenty millimetres. This calculator converts a supplied positive spacing into a gauge without counting an image. For a complementary step, use Compound Perforation Notation Formatter (e.g. 11x12.5): Compound perforation notation records horizontal and vertical gauges together. This formatter joins supplied positive numeric gauges with lowercase x, without measuring teeth or selecting a catalogue rounding convention.
References
Similar or alternative tools
- Perf Count from Hole Spacing mm Converter
The spacing between adjacent perforation holes determines the equivalent number of intervals over twenty millimetres. This calculator converts a supplied positive spacing into a gauge without counting an image.
- Compound Perforation Notation Formatter (e.g. 11x12.5)
Compound perforation notation records horizontal and vertical gauges together. This formatter joins supplied positive numeric gauges with lowercase x, without measuring teeth or selecting a catalogue rounding convention.