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Adaptive Grip Diameter Offset

Compare explicit adaptive-grip diameters without choosing a grip size or assessing suitability.

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Description

Measure a recorded grip diameter's signed difference from a supplied reference.

Occupational-therapy records preserve the user's stated roles, goals, assistance and task context. Time shares and normalized preferences depend on their declared denominator or scale, while prompt counts are observations rather than measures of independence by themselves. Device geometry and loan balances need verified source records before broader interpretation.

Measure a recorded grip diameter's signed difference from a supplied reference.

When to use this tool

Use Adaptive Grip Diameter Offset when you already have recordedDiameter, suppliedReferenceDiameter and need to measure a recorded grip diameter's signed difference from a supplied reference.

How to use the tool and how it works

  1. Enter recordedDiameter, suppliedReferenceDiameter. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read signedDifference. Use the output convention below.

Require nonnegative recorded/reference diameters; return recorded-reference.1

Input fieldMeaning and unitsAccepted input
recordedDiameterRecorded DiameterRequired. Finite number; minimum 0.
suppliedReferenceDiameterSupplied Reference DiameterRequired. Finite number; minimum 0.
Output fieldInterpretationReturned shape
signedDifferenceSigned DifferenceRequired. Finite number.
json
{
  "input": {
    "recordedDiameter": 35,
    "suppliedReferenceDiameter": 30
  },
  "output": {
    "signedDifference": 5
  }
}

Limitations and assumptions

  • Use matching units; no hand measurement, ergonomic fit, accessibility need or safe device size is selected.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Review the original activity record, client-stated priorities and assessment instrument for a substantive assessment. Inspect actual devices and inventory when fit, condition or availability matters; scalar offsets and record counts preserve narrower facts.

References

  1. Calculation and input contract: occupational-therapy/adaptive-grip-diameter-offset — tool.io

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