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A lever escapement in a mechanical watch. The largest brass circle is the balance wheel. The escape wheel is the silver gear above and to the right of
A lever escapement in a mechanical watch. The largest brass circle is the balance wheel. The escape wheel is the silver gear above and to the right of it whose bearing is surrounded by decorative engraving. Most of the lever itself is hidden, but both pallets are visible.
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Original drawing from around 1637 of the pendulum clock designed by Galileo, incorporating the escapement.
Original drawing from around 1637 of the pendulum clock designed by Galileo, incorporating the escapement.
Pin wheel escapement of South Mymms tower clock
Pin wheel escapement of South Mymms tower clock
First detent escapement by Pierre Le Roy 1748.
First detent escapement by Pierre Le Roy 1748.
Earnshaw's detent escapement, used widely in chronometers.
Earnshaw's detent escapement, used widely in chronometers.