Escapement Wheel Tooth Count Lookup

Read exact caller verified escapement-wheel tooth count, not assuming every lever/anchor shares geometry or inferring it from beat rate.

Description

Escapement tooth counts depend on a verified movement specification.

Escapement tooth counts depend on a verified movement specification. Beat rate alone does not identify the wheel geometry.1

Enter aligned nonempty distinct nonblank movement IDs/integer counts 1–1000 and exact query. Return matching count; an absent ID fails.

When to use Escapement Wheel Tooth Count Lookup

Use Escapement Wheel Tooth Count Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No assumed universal lever/anchor design or beat-rate inference is supplied.

Prepare the measured watch or gearing records and verified movement specifications requested. Confirm tooth counts, quarter-hour ordering and caller strike conventions.

How to use Escapement Wheel Tooth Count Lookup and understand its results

  1. Prepare the measured watch or gearing records and verified movement specifications requested. Confirm tooth counts, quarter-hour ordering and caller strike conventions.
  2. Enter callerMovementIds, requestedMovementId, verifiedEscapeWheelToothCounts using the field table and calculation rules, then run the tool.
  3. Read matchedVerifiedValue. The explanation below defines the units, signs, ordering and any flags or placeholder values.
  4. If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
Input fieldMeaningValue type; see rules belowRequirement
callerMovementIdsCaller movement idslist of stringRequired
requestedMovementIdRequested movement idstringRequired
verifiedEscapeWheelToothCountsVerified escape wheel tooth countslist of numberRequired

Enter aligned nonempty distinct nonblank movement IDs/integer counts 1–1000 and exact query. Return matching count; an absent ID fails.

value=verified tooth count at exact movement match

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output fieldMeaningValue type
matchedVerifiedValueMatched verified valuenumber
json
{
  "input": {
    "callerMovementIds": [
      "A",
      "B"
    ],
    "requestedMovementId": "A",
    "verifiedEscapeWheelToothCounts": [
      15,
      20
    ]
  },
  "output": {
    "matchedVerifiedValue": 15
  }
}

Limitations and assumptions

No assumed universal lever/anchor design or beat-rate inference is supplied.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Extremely large text inputs are rejected. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Escapement Lock Angle Lookup: Escapement lock angle describes a different characteristic from lift angle. It requires a verified movement-specific record. For a complementary task, use Barrel Teeth to Mainspring Turns Calculator: Observed driven-wheel turns and measured gearing can estimate barrel rotation. Unusable spring turns must be independently measured.

References

  1. Escapement Wheel Tooth Count Lookup — tool.io

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