Model by Dent of lever escapement for use with lantern, 1850-1883 Model of a Lever Escapement , 1850-1883 1850-1883
IMAX camera mock-up, scale 1:1, made of wood by IMAX Corporation, Toronto, Canada, 1983. Mock-up of IMAX camera 1983 1983
Model by Dent of Graham's cylinder escapement for use with lantern, 1850-1883 Model of Graham's Cylinder Escapement, 1850-1883 1850-1883