Lift Angle Lookup
Read lift angle only from caller verified movement/reference catalog; no guessed make/model database or unsupported amplitude correction.
Description
A timegrapher’s lift-angle setting depends on the movement’s verified specification.
A timegrapher’s lift-angle setting depends on the movement’s verified specification. A guessed value can affect amplitude interpretation.1
Enter aligned nonempty distinct nonblank movement IDs/angles strictly above 0 through 90° and exact query. Return matched value; absent queries fail.
When to use Lift Angle Lookup
Use Lift Angle Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No guessed catalog, amplitude correction or servicing instruction 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 Lift 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, verifiedLiftAnglesDegrees 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 |
| verifiedLiftAnglesDegrees | Verified lift angles degrees | list of number | Required |
Enter aligned nonempty distinct nonblank movement IDs/angles strictly above 0 through 90° and exact 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",
"verifiedLiftAnglesDegrees": [
52,
50
]
},
"output": {
"matchedVerifiedValue": 52
}
}Limitations and assumptions
No guessed catalog, amplitude correction or servicing instruction 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 Escapement Wheel Tooth Count Lookup: Escapement tooth counts depend on a verified movement specification. Beat rate alone does not identify the wheel geometry.
References
-
Lift Angle Lookup — tool.io
Similar or alternative tools
- Escapement Lock Angle Lookup
Escapement lock angle describes a different characteristic from lift angle. It requires a verified movement-specific record.
- Escapement Wheel Tooth Count Lookup
Escapement tooth counts depend on a verified movement specification. Beat rate alone does not identify the wheel geometry.