Tutorial
How to measure your watch lug width
Learn how to measure the gap between your watch lugs with simple tools so you can buy a replacement strap that fits on your first attempt.
· 3 min read
A. Lange & Söhne · Lange 1
Ref. 139035
The A. Lange & Söhne Grand Lange 1 Moonphase Lumen takes a 20 mm strap: measure between the lugs and that is the only number you need. We list 1,170 straps in that width. With a 41 mm case, a strap of medium thickness keeps the balance. Manual movement. Most straps here come with quick-release spring bars, so the swap takes a minute and no tool.
We do not sell watches. This page exists to find the straps that fit this one.