Detailed articles on complications

Some of our favorite articles on watch movements and complications:

Chronographs
Worn & Wound: Chronography Series
Chronography 1. A History
Chronography 2: Column Wheels & Cams
Chronography 3: Counting Registers
Chronography 4: Lemania 5100
Chronography 5: The Valjoux 7750
Chronography 8: Meca-Quartz — Is It Really the Poor Relation?
Chronography 9: Valjoux 72 – The Driver’s Engine
Chronography 10: Three Excellent Vintage Calibers from Seiko and Citizen

Split-seconds/rattrapante
Hodinkee: In-Depth: A Detailed Survey Of The Split-Seconds Chronograph, And Its Cousins