File:NIE 1905 Telephone - hook circuit.jpg
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Size of this preview: 800 × 556 pixels. Other resolutions: 320 × 222 pixels | 640 × 445 pixels | 1,009 × 701 pixels.
Original file (1,009 × 701 pixels, file size: 189 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:16, 29 August 2017 | 1,009 × 701 (189 KB) | Bob Burkhardt | {{Information |Description ={{en|1=Telephone circuit with hook down and hook up: ''a'' and ''c'' binding posts connecting with the line. The post ''b'' forms the ground connection for lightning. The dotted lines indicate that part of the circuit cu... |
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