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Timegrapher reading context: what do rate, amplitude and beat error actually tell me? · RWI-07419

Thread starter BenchNotes 04371
Start date 06/02/20
Replies 3

BenchNotes 04371

Member

Thread starter

06/02/20

I ran a watch on a basic timegrapher and got +6 s/d, 245 degrees amplitude and 0.8 ms beat error, dial up, about an hour after winding. Is this good, bad or normal? I don't want to send it for service on a single reading.

Reply scope: address the opening question, explain the supporting record or reasoning, and state the limit of the answer.

CaseFile 04373

Member

06/02/20

Can the same settings and winding state be used for several positions? Record each position separately rather than combining measurements taken under different conditions.

CaliberReader 04372

Member

06/02/20

First identify the caliber, lift-angle setting, winding state and measurement position. Without those fields, the rate, amplitude and beat-error values lack enough context for a useful comparison.

DialCheck 04374

Member

06/02/20

Amplitude depends on the movement and measurement setup. Compare it with appropriate specifications and a qualified watchmaker’s assessment; a universal pass/fail threshold would be misleading.

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