Pocket Watch Mechanism by Louis Recordon, 1800-1820
1800-1820
Model of the dead-beat escapement as invented by George Graham
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