Case 38 — Lume comparison: keep exposure and charging conditions consistent · source wording exercise
Correction note for “Lume comparison: keep exposure and charging conditions consistent”: retain the wording beginning “Repeat with equal light source, charging duration, elapsed time and camera…” in the record. If later material changes it, add the date, the changed wording and the source for that change; do not invent a completed correction here. Retain the source wording beside any paraphrase.
Case 111 — What a water-resistance claim does and does not establish · documentation exercise
A listing describes a water-resistance rating but provides no test record for the individual watch. What evidence would address the gap?
Review focus: documentation. Distinguish an original record from a proposed record format. Use the original answer fragment “A photograph or a caseback engraving is not…” as the discussion anchor; no new event or result is supplied.
Exercise RWF-28599/111: address this question within its stated limits.
Case 12 — Lug-to-lug and end-link overhang in wrist photographs
Record lug-to-lug and the effective span including rigid end links. Use a similar camera distance and neutral wrist position; photographs support fit discussion but do not replace measurements.
Case 6 — Service enquiry: information a watchmaker can use
Limit of the answer in “Service enquiry: information a watchmaker can use”: “Document when it stops, winding behaviour, recent impacts and…” is an excerpt from the discussion, not an independent verification. A reader needs the relevant original material before treating an interpretation as established. Review focus: scope. Keep the stated question separate from any broader claim.
Start with how you measured it. Comparing against a phone clock once a day for a week, at the same time, and noting the offset is reliable enough. One 24-hour reading isn't, because rate depends on wrist time, position overnight and state of wind. Average across several days before deciding anything.
Case 44 — A maintenance log that remains useful after a sale · source wording exercise
Method note for “A maintenance log that remains useful after a sale”: use “Redact addresses and payment information; do not invent service…” as a row heading in a proposed working record. Put the statement, its supporting source or measurement, and any unresolved detail in separate fields. This proposes a format; it supplies no additional evidence. Retain the source wording beside any paraphrase.
Case 19 — Comparing versions without mixing case sizes
Two purported versions differ in case diameter and bracelet. How can the comparison avoid attributing every difference to a revision?
Exercise RWF-22474/19: address this question within its stated limits.
Case 24 — Accuracy expectations: is -8 s/d acceptable on an entry-level automatic?
My entry-level automatic loses about 8 seconds a day. The spec sheet lists a tolerance range, but I'm not sure how to read it or whether my measurement is reliable. Is this something to fix or something to live with?
Exercise RWF-21408/24: address this question within its stated limits.
Case 33 — Lume questions: why does my lume fade so quickly, and how should I compare it?
Use a consistent charge, fixed exposure and several elapsed-time observations. Record readability and the conditions rather than applying an unsupported universal fade-time threshold.
Case 16 — QC photography: what photos actually help verify a pre-owned listing?
Ask for a straight-on dial photo with diffuse light and no flash, the full dial in frame, and the hands placed away from the indices (10:10 isn't ideal, because it covers the upper markers). Flash flattens printing and hides lume condition. Diffuse light shows print edges, alignment and any spotting.
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.
Case 12 — Timegrapher reading context: what do rate, amplitude and beat error actually tell me?
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.
Case 22 — Shipping timeline: separate dispatch, handover and scan events
Distinguish label creation from physical acceptance and retain dated event text with personal details removed. Ask the sender or carrier for clarification; missing scans alone do not establish loss or seizure.
Case 7 — Lug-to-lug and end-link overhang in wrist photographs
A wide-angle wrist photo exaggerates the nearest edge of the case. How can two watches be compared fairly?
Exercise RWF-13190/7: address this question within its stated limits.
Power reserve is how long the watch runs from full wind until it stops. It matters if you rotate watches: a 38-hour reserve may stop over a weekend off the wrist, while 70-plus hours may not. One clarifying point is that rate stability often gets worse near the end of the reserve, so the full figure is not all precision-grade running time.