Leitz Erhitzungsmikroskop IIIP

This Leitz Erhitzungsmikroskop IIIP (Heating Microscope) originated from a ceramic laboratory. It was used to study the behaviour of glazes and/or ceramics during the firing process. A small sample of clay and/or glaze was heated in the furnace (centre) up to 1250 degrees Celsius. Through the microscope, users could observe the sample's behaviour within the furnace. The microscope dimensions are approximately 1.2 metres x 0.3 metres, and its weight is estimated at 50-60 kg. This vintage microscope has two light sources: an incandescent lamp and a carbon lamp (see images). While it's uncertain if the microscope still works, its unique design and historical value make it a fascinating piece for collectors.