Assertion: dish radio telescope | /r/HasProperty | 76.2 metres
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text: The "Mark I" telescope, now known as the Lovell Telescope, was the world's largest steerable dish radio telescope, 76.2 metres (250 ft) in diameter, when it was constructed in 1957; it is now the third largest, after the Green Bank telescope in West Virginia and the Effelsberg telescope in Germany.