Dial Document Links

Other documents available here (in PDF format):

• AEI Ltd: Instructions for maintaining and repairing Dials No. 20, 1956 (extremely comprehensive).
• Aitken, extracts from his book Automatic Telephone Systems (1921) concerning Dials.
• British Post Office: Educational Pamphlet 5/1 'Telephone Dials' (training text).
• British Post Office: Engineering instructions A3118 (Dial No. 20), A3215 (storage of Dial No. 30), B1003 (dials in general).
• Commonwealth of Australia: Dials in use in 1929.
• Ericsson Telephones Ltd: Advertisement for dials (mid-1950s) plus N19877, N4381, N4383A, N43941A (Ericsson/Plessey Works drawings).
• GEC Ltd: Catalogue leaflet DSL1a for Dial No.20, late 1950s.
• USA: article on Dials used in North America by Bruce Crawford.

Last revised December 12, 2006

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