Scale model of the Woodall-Duckham Intermittent Vertical Chamber of the original type. Model, Woodall-Duckham Intermittent Vertical Chamber
Model of inclined vertical retort installation at the Erdberg Works, Vienna, on table stand. In dirty condition, many parts loose and damaged. Model of inclined vertical retort installation at the Erdberg Works
Model, scale 1:64, of an installation of Woodall-Duckham Continuous Vertical Retorts. Model of Woodall-Duckham continuous vertical retorts
