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Patent for an Escapement

Breguet Perpetuel Repeater

[breguet] An illustration from the patent issued for the Chronometer à Ressonance by A. L. Breguet, showing the parallel, paired pendulums
aperture=f/2.8 focal=7.4mm (35mm equivalent: 35mm) exposure=0.040 s (1/25)

Patent for an Escapement

Breguet Perpetuel Repeater
Album created by album script from MarginalHacks by Dave Madison Wed Sep 15 17:11:43 2010