James Bradley and Bradley Meridian black plaque

London, England, United Kingdom

The Bradley Meridian The first British National Meridian The Greenwich Meridian was set according to the location of the telescope used by the Astronomer Royal to establish time. Between 1750 and 1850, the Greenwich Meridian was marked by the north-south line running through the Transit Instrument f

irst used by James Bradley, the 3rd Astronomer Royal (1742-62). The Bradley Meridian served as Longitude 0° for all of the earliest Ordnance Survey maps of England. When the Airy Transit Circle Telesc

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