Our watch expert Gisbert L. Brunner knows better than anyone else that mainsprings perform herculean tasks. With a maximum thickness of just 75/1,000 mm, they develop strong torque, which they keep almost constant. Gisbert will show you why.http://www.watchtime.com/blog/throwing-a-curve-the-how-what-when-where-and-why-of-mainsprings/?utm_source=WatchTime+Daily+Update&utm_campaign=50f29f8f51-WT+Daily&utm_medium=email&utm_term=0_8338768216-50f29f8f51-14531153&mc_cid=50f29f8f51&mc_eid=1436559a32

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