Authoritative answers to the most common technical questions about watchmaking — gear ratios, electrical units, magnetism, battery voltage, tolerances and fits, and heat treatment.
Authoritative answers to the most common questions about mechanical watch manufacturing — components, materials, precision tolerances, jewel bearings, heat treatment, assembly, and the 13-day quality inspection.
Authoritative answers to the most common questions about GMT, the International Date Line, Beijing Time, leap seconds, and how world clocks work — and how it all connects to luxury
Clear answers to the most common questions about time zones — who invented them, how they work, what the International Date Line is, and how they connect to the watches
Clear answers to the most common questions about world time, time zones, solar days, ephemeris seconds, and atomic clocks — and how it all connects to the watch on your