Siemens Brothers — The Cape Peninsula Automatic Telephone System & Trunk Exchange

London , Siemens Brothers & CO , 1933. First edition. Cloth. A very scarce and fascinating volume on The Cape Peninsula Automatic Telephone System & Trunk Exchange, with illustrations and folding plates. A very scarce volume. The Cape Peninsula Automatic Telephone System & Trunk Exchange The Siemens Brother was an electrical engineering design and manufacturing business in London and this volume traces the development of the Cape Peninsula Network, exploring the apparatus needed, circuit elements, the power plant and the trunk exchange.With thirteen folding plates and other illustrations throughout the text. Collated, complete. In the publisher's original cloth binding. Externally, excellent. Previous owner inscription to the front free endpaper dated 1933. Internally, firmly bound with bright and clean pages. Fine . Ill.: Not Stated. Fine .