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Published on 2 Sep 2015
Did you know you can walk behind the clock faces of Big Ben?
about the clock dials
Number of clock dials: 4 Clock dials diameter: 7m Length of hour figures: 60cm Clock dial frames: cast iron Glass in each clock dial: 312 pieces of pot opal glass Illumination of each dial: 28 energy efficient bulbs at 85 watt each Lifetime of each energy efficient bulb: 60,000 hours