British Horological Journal, July 2013

On the front cover of the July issue is the IWC Ingenieur Constant-Force Tourbillon! The Ingenieur is a model first created in the early ’50’s to combat magnetism in wristwatches.

“The case is a composite of ceramic and platinum. The 4-day movement drives a tourbillon with an on-board constant force device, not unlike Derek Pratt’s, rewinding once per second, presenting the tourbillon with a jumping dead seconds feature. A moon phase dial with mirrored displays for southern and northern hemispheres sits opposite the power reserve indicator.” p291.

IWC Ingenieur Constant-Force Tourbillon

IWC Ingenieur Constant-Force Tourbillon

 

About herman

Herman Holtzhausen, owner of Holtzhausen Clocks and Music boxes, is a Trade Associate and Representative of the BHI in South Africa.
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