
Vertical Clutch vs Horizontal Clutch: How a Chronograph Actually Engages
A vertical clutch engages through a spinning cone and flywheel. A horizontal clutch slides gears sideways into mesh. Here is how each actually works and which watches use each.
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A vertical clutch engages through a spinning cone and flywheel. A horizontal clutch slides gears sideways into mesh. Here is how each actually works and which watches use each.

George Daniels invented the co-axial escapement in the 1970s. Omega put it into production in 1999. Here is what it actually does, and what servicing it really costs.