Incline Gravity Clock: powered by gravity this clock has no batteries or mainspring- however, once each day the clock must be picked up and placed back at the top of the ramp. As the clock rolls down the incline (here 12 hours are captured in time-lapse of 24 seconds), gravitational potential energy is translated into the kinetic energy of the moving clock gear train and oscillating balance wheel. The clock face and mechanism hang suspended with a counterweight that keeps them upright- although you might notice the mechanism of this vintage clock sticks a little at 7 o’clock. The clock unit is also quite heavy, weighing in at 2.7kg (6lbs).
Fonte: instagram.com