Description

This device is a modification of the Dudgeon, but with a 2 inch rod which extends and has an adjustable weight to adjust the pressure rather than a screw spring. The clockwork mechanism turns the smoked paper on a rod drive. the rod has a series of plates to mark the paper and provide a scale of height. See N. H. Naqvi and M. D. Blaufox page 110.

Case lid distressed as shown-Label for retailer ‘Medicinisches Waarenhaus, Berlin’-most likely manufactured by Allen and Hanbury but not marked for maker