Escapement Lock Angle Lookup
Read caller verified escapement lock-angle specifications by exact movement identifier; not deriving lock from lift or claiming a universal servicing setting.
Description
Escapement lock angle describes a different characteristic from lift angle.
Escapement lock angle describes a different characteristic from lift angle. It requires a verified movement-specific record.1
Enter aligned nonempty distinct nonblank movement IDs/verified angles strictly above 0 through 45° and exact nonblank query. Return matched value; absent queries fail.
When to use Escapement Lock Angle Lookup
Use Escapement Lock Angle Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No built-in model catalog, lock-from-lift derivation or servicing setting 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 Lock Angle Lookup and understand its results
- Prepare the measured watch or gearing records and verified movement specifications requested. Confirm tooth counts, quarter-hour ordering and caller strike conventions.
- Enter callerMovementIds, requestedMovementId, verifiedLockAnglesDegrees using the field table and calculation rules, then run the tool.
- Read matchedVerifiedValue. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- 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 field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| callerMovementIds | Caller movement ids | list of string | Required |
| requestedMovementId | Requested movement id | string | Required |
| verifiedLockAnglesDegrees | Verified lock angles degrees | list of number | Required |
Enter aligned nonempty distinct nonblank movement IDs/verified angles strictly above 0 through 45° and exact nonblank query. Return matched value; absent queries fail.
value=verified angle at exact matching movement ID Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| matchedVerifiedValue | Matched verified value | number |
{
"input": {
"callerMovementIds": [
"A",
"B"
],
"requestedMovementId": "A",
"verifiedLockAnglesDegrees": [
2,
3
]
},
"output": {
"matchedVerifiedValue": 2
}
}Limitations and assumptions
No built-in model catalog, lock-from-lift derivation or servicing setting 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 Lift Angle Lookup: A timegrapher’s lift-angle setting depends on the movement’s verified specification. A guessed value can affect amplitude interpretation. For a complementary task, use Escapement Wheel Tooth Count Lookup: Escapement tooth counts depend on a verified movement specification. Beat rate alone does not identify the wheel geometry.
References
-
Escapement Lock Angle Lookup — tool.io
Similar or alternative tools
- Lift Angle Lookup
A timegrapher’s lift-angle setting depends on the movement’s verified specification. A guessed value can affect amplitude interpretation.
- Escapement Wheel Tooth Count Lookup
Escapement tooth counts depend on a verified movement specification. Beat rate alone does not identify the wheel geometry.