Model by Dent of lever escapement for use with lantern, 1850-1883 Model of a Lever Escapement , 1850-1883 1850-1883
Canister clock base from the English Reifler escapement astronomical clock designed by E. T. Cottingham, by Thomas Mercer & Co, St. Albans, England, 1923-1925 Canister clock base from the English Reifler escapement astronomical clock designed by E. T. Cottingham 1923-1925
Model by Dent of Graham's cylinder escapement for use with lantern, 1850-1883 Model of Graham's Cylinder Escapement, 1850-1883 1850-1883