A watch needs two measurements to fit: **lug width** (the gap between the lugs where the strap attaches, almost always 18, 19, 20, 21, 22, or 24 mm) and **length** (S/M/L for leather straps, or...

For most women, an 18-inch (45 cm) chain is the safest first pick — it sits just below the collarbone and works with almost any neckline. For most men, 22 to 24 inches (56–61 cm)...

In Canada, ring size is measured by the inside circumference of the band in millimetres. The most common women's sizes run from 6 to 7 (about 51.9–54.4 mm) and men's from 9 to 11 (about...