Stop-start facsimile telegraph, Siemens-Hell-Schreiber GL, model T type 72c, 1956

The Siemens Hell facsimile receiver or Hellschreiber receiver was designed by Rudolf Hell. A precursor of the fax machine, the Hellschreiber transmitted text via electrical coding and was used in post offices, editorial departments, police stations and meteorological services. See also Science Museum Group object number 1984-1040.