Case 4 — Accuracy expectations: is -8 s/d acceptable on an entry-level automatic?
A correction to a common belief: an automatic doesn't need to match a quartz watch to be healthy. Consistency matters more than the absolute figure. A watch that's reliably -8 every day is easy to live with, since you correct it once a week. One that swings from +10 to -15 is the real concern.
Case 13 — Date window centring: compare the same date at the same angle
Correction note for “Date window centring: compare the same date at the same angle”: retain the wording beginning “Use the same numeral, camera axis…” 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. Keep the stated question separate from any broader claim.
Case 83 — Comparing versions without mixing case sizes · comparison exercise
Reader check for “Comparing versions without mixing case sizes”: distinguish the discussion point “Match reference, dimensions and…” from its proposed application. The thread offers a way to reason about the question, without adding a personal experience or a newly observed outcome. Review focus: comparison. Make the basis of a comparison explicit before interpreting it.
Case 18 — What a water-resistance claim does and does not establish
Limit of the answer in “What a water-resistance claim does and does not establish”: “Ask a qualified watchmaker about a suitable test for that individual…” 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.
Case 271 — Timegrapher reading context: what do rate, amplitude and beat error actually tell me? · reader check exercise
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.
Review focus: reader check. State what a new reader can and cannot infer from this exercise. Use the original answer fragment “If it is unknown, label amplitude as provisional instead…” as the discussion anchor; no new event or result is supplied.
Exercise RWF-25905/271: address this question within its stated limits.
Micro-adjust spacing varies by clasp. Measure the actual change at each setting rather than assuming a standard number of millimetres; compare the usable range with the link length.
Case 14 — Crystal reflections: why a dark patch is not a coating test
A dark area appears at an oblique angle in a single photograph. Does that establish a coating difference?
Exercise RWF-23493/14: address this question within its stated limits.
Case 43 — Comparing dial colour under different lighting · source wording exercise
Method note for “Comparing dial colour under different lighting”: use “Compare controlled images where available and avoid calling a…” 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.
Request open and closed views from both sides, with the watch supported safely. Separate cosmetic alignment from whether the clasp engages reliably; functional concerns need hands-on inspection.
Case 35 — First QC request: the minimum useful information
State the model configuration, the specific concern and links to clear redacted images. Include complete instrument settings where relevant and say explicitly what evidence is missing.
Keep the date, work performed, provider invoice reference and test results where available. Redact addresses and payment information; do not invent service events to fill an empty history.
Case 9 — QC photographs: perspective or a genuinely tilted index?
Limit of the answer in “QC photographs: perspective or a genuinely tilted index?”: “Request a level straight-on image with the hands…” 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.
Case 22 — Disputed observation: is this dial colour shift real or just lighting?
Suggested protocol. 1) Both dials in one frame. 2) Diffuse daylight, no direct sun, plus a second shot under neutral indoor light. 3) Grey card visible. 4) No filters, no editing. 5) State camera settings if known. If both shots show the same direction of difference, the claim is supported. If the difference flips between lighting conditions, it's most likely lighting.
Case 45 — Date window centring: compare the same date at the same angle · source wording exercise
Different numerals have different optical centres. A comparison mixes two dates and unequal magnification. How can the evidence be improved?
Review focus: source wording. Retain the source wording beside any paraphrase. Use the original answer fragment “Keep the uncropped originals alongside the detail crops and distinguish…” as the discussion anchor; no new event or result is supplied.
Exercise RWF-15056/45: address this question within its stated limits.
Case 34 — Crystal types: sapphire, mineral and acrylic trade-offs for daily wear
Domed crystals of any material add distortion at the edges, which some people like and others find hard to read at angles. Box-shaped or high-domed crystals also add thickness. If you're comparing two otherwise similar watches, check total thickness against crystal profile before assuming the case itself is thicker.