@iwcwatches: So, is the tourbillon really useless? IWC watchmaker Thomas Zimmermann takes us back to the origins of the tourbillon, explaining why it was invented to counter the effects of gravity – and why, more than 200 years later, it still holds a special place in watchmaking. #IWCwatches #IWCschaffhausen #Watches #IWC #IWCreplies