Summary
A photo emissive cell used in Siemens KarolusTelefunken picturegram equipment. The item consists of a ring shaped glass tube containing a pair of electrodes. Part of a series of items illustrating the technology and products of facsimile telegraphy
Physical Description
Ring shaped glass tube containing a pair of electrodes, enclosed in circular metal case attached to metal backplate.Two screw terminals with black knobs.
More Information
-
Collection Names
-
Collecting Areas
-
Acquisition Information
Donation from Australia: Post Master General's Department (PMG), 25 Oct 1938
-
Manufacturer
-
Inscriptions
Marked in white paint on face of metal backplate: "Nr. 0,682 Zundsp. max. 142V"
-
Classification
-
Category
-
Discipline
-
Type of item
-
Overall Dimensions
120 mm (Length), 75 mm (Width), 30 mm (Height)
-
Dimensions
10.7 cm (Length), 7 cm (Width), 3 cm (Height)
Measurement From Conservation. Measuring Method: Maximum dimensions
-
Keywords
