


Unusual form of lever escapement
1840

Modified verge escapement

Scale model of Su Song's Water-Balance Escapement
1965

Machine man-made movement with lever escapement
1870

Model of Lever Escapement, Unsigned, 1860-1928
1860-1928
Model of a Lever Escapement , 1850-1883
1850-1883
Canister clock base from the English Reifler escapement astronomical clock designed by E. T. Cottingham
1923-1925
Model of Graham's Cylinder Escapement, 1850-1883
1850-1883