GPO Sidelights: Mobile Telephone Exchange Van
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| Caption | Mobile Telephone Exchange Van. At least six months are necessary to build and equip a small automatic exchange in a country district. In order to meet emergencies while an exchange of this kind is being built or extended, the Post Office has designed a four-wheeled trailer vehicle completely equipped with power plant and automatic telephone switches for use as a small exchange for up to 100 subscribers. The mobile exchange is towed by a tractor to the site and the pneumatic-tyred wheels are removed and replaced by four heavy steel feet. One of a set of 50 cigarette cards on the subject of Interesting Sidelights On The Work Of The GPO published by Lambert and Butler in 1939. Lithographs based on photographs. |
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| Creator | English School (20th Century) |
| Artwork medium | colour lithograph |
| Credit | Look and Learn |
| Search stock images by keyword | GPO General Post Office postal services Post telecommunications telephone communications British Britain technology service industry 1939 Nineteen Thirties technological progress development science advances Mobile exchange van months build equip small automatic country district emergencies Post Office four-wheeled trailer vehicle power plant automatic telephone switches small exchange 100 subscribers mobile exchange towed tractor site pneumatic-tyred wheels removed heavy steel feet GPO Sidelights Mobile Telephone Exchange Van |
| Stock image ref | Sizes available | Views |
|---|---|---|
| M726997 | Hi-res: 5,464 x 2,929 pixels Lo-res: 1,366 x 732 pixels |
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