The Timepiece Journal » horology

Expert answers to every common question about watch consumer rights and quality standards — the Three-Guarantee Policy, performance faults, timekeeping accuracy, appearance inspection, and professional ethics.

Expert answers to every common question about Swiss ETA movements — what ETA SA is, the Three Treasures (2824, 2892, 7750), supply restrictions, and whether an ETA movement means lower quality.

Authoritative answers to the most common technical questions about watchmaking — gear ratios, electrical units, magnetism, battery voltage, tolerances and fits, and heat treatment.