Model of the dead-beat escapement as invented by George Graham

Pocket Watch Mechanism by Louis Recordon, 1800-1820

1800-1820

Model of half dead-beat escapement

Model of dead-beat regulator escapement

Two-day marine chronometer by John Arnold and Son (No 63)

1771-1800

Repeater, cylinder, going barrel, in gold case, with cylinder dial

circa 1800