Models of Detante, Duples and Verge excapaments by Perrelet(perhaps not A. L.) 1822
[MAM, paris 2006]
aperture=f/2.8 focal=7.4mm (35mm equivalent: 35mm) exposure=0.050 s (1/20)
paris2006 : things : Museé des Arts et Metiers, Paris : Clock Escapment Models |
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Parts of a Marine Chronometer |
Breguet Resonance |
Parts of a Marine Chronometer |
Breguet Resonance |