Scale model of Su Song's Water-Balance Escapement
1965
Machine man-made movement with lever escapement
1870
Unusual form of lever escapement
1840
Model of Lever Escapement, Unsigned, 1860-1928
1860-1928
Modified verge escapement
Small movement and horizontal escapement
Model of Graham's Cylinder Escapement, 1850-1883
1850-1883
Working model of the co-axial escapement
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